The various embodiments of the present invention provide a modular indicator assembly to indicate the status of power contacts in the switchboard module when the module is operated from service position to test position without opening the door of the switchboard panel. According to one embodiment, the assembly has ...

An improved arrangement for phase and neutral terminals in single module modular devices so as to make the arrangement compact and with simple and easy assembling/de-assembling comprising a housing (5), nut means (2) fixed substantially transverse to said housing, screw means (1) operatively fastened to said nut mea...

The various embodiments of the present invention provide a system and method to vary the pitch of the audio output to a user corresponding to the measured saturated oxygen (SpO2) level in the blood. The system has a pulse oximeter integrated with an ultrasound scanner to measure the SpO2 values. The measured SpO2 va...

The various embodiments of the present invention provide an integrated ultrasound imaging device with pulse oximeter waveform display for application of regional anesthesia. The device has an ultrasound probe and a Saturation of Hemoglobin with Oxygen as measured by Pulse Oximetry (Sp02) probe connected to a display...

The present invention consists of flexible extension arm assembly, circuit breaker, driver link and plunger assembly and busway. Flexible extension arm assembly is fixed with the walls of the plug-in box enclosure and free to rotate. Once the breaker is mounted on the circuit breaker mounting plate, knob of the circ...

The present invention discloses a withdrawable type circuit breaker, comprising of a fixed cradle compartment having plurality of jaw contacts; and a moving switching module which can be racked into said fixed cradle compartment; wherein, said moving switching module comprises of plurality of fixed conductor assembl...

The present disclosure relates to device thermally efficient busway system. The disclosed busway system 100 comprises a plurality of electrically conductive busbars 108 arranged within an inner volume of the busway system 100, and a plurality of foils 112, each arranged at a lateral side of each of the plurality of ...

The present disclosure relates to system and method utilizing one or more sensing devices capable of detecting a plurality of characteristics of a medium, such as, soil, water, wood and the likes. The sensing device comprises an electrode matrix including in combination essentially of timber, a hydrate of calcium su...

An auto restored interlock system (3) for a drawout device comprising a fixed unit (1) and a withdrawable unit (2). The fixed unit comprises an unlocking lever (6) coupled to balancing spring means (12) and biasing spring (11), pivotally mounted on an actuating lever (4) positioned on at least one side of the fixed ...

The present disclosure relates to a system and method for controlling dispensing of water from a water dispensing unit over a medium. The system comprises a microcontroller that receives a signal from one or more moisture sensors, wherein each moisture sensor comprises an electrode matrix including in combination es...

The present disclosure relates to a system and method for controlling dispensing of water from a water dispensing unit over a medium. The system comprises a microcontroller that receives a digital signal from one or more moisture sensors, wherein each moisture sensor comprises an electrode matrix including in combin...

The present disclosure relates to the field of circuit breaker, and more specifically relates to, a modular jaw contacts assembly or modular contact assembly for adjusting/ maintaining gap/ spacing of contact jaws of a withdrawable circuit breaker. In an aspect, the circuit breaker can include a plug contact and a c...

Disclosed is an adjustable charging handle assembly for circuit breakers having movable electrical contacts coupled to a shaft. The adjustable charging handle assembly comprises a bearing holder assembly capable of being connected to a mechanism side plate (35) and a handle assembly capable of communicating with the...

The various embodiments of the present disclosure provide an arc quenching assembly for circuit interrupters. The assembly comprises an arc chute and a plurality of de-ion plates arranged in the arc chute. A first arc runner and a second arc runner are placed at the extreme ends of the arc chute. The assembly furthe...

The present invention provides a test device for testing an earth leakage module in an electrical switching device. The test device comprising: a test switch communicably connected to a controller unit, wherein the test switch actuated to trigger the controller unit to perform test operation; an oscillator unit actu...

The various embodiments of the present invention provide a moving contact locking mechanism in a molded case circuit breaker. The locking mechanism comprises a driveshaft with a predefined profile, a moving contact, a contact pin, two contact springs, a first spring mounting pin and a. second spring mounting pin. On...

Method of building a jack-up rig. The method comprises identifying a building site having earth of the required load bearing capacity in the proximity of a sea; forming a plurality of spaced apart reinforced open trenches at the site corresponding to the legs of the jack-up rig; building the legs and spud cans of th...

Disclosed is a junction box for interlocking three circuit breakers. The junction box comprises a first plate member having at least three flanges attached to a base thereof. Each flange includes an opening configured thereon. Further, the junction box comprises a second plate member capable of being secured over th...

The various embodiments of the present invention provide a differential mechanical interlock assembly for contactors for simultaneous interlocking of electromagnetic contactors without the need for any additional circuitry. The interlock assembly comprises a base plate mounted with two electromagnetic contactors. Tw...

The various embodiments of the present invention provide a composite contact material for contact system which exhibits both diamagnetism and ferromagnetism. The composite contact material comprises a first layer of an alloy material, a second layer of a diamagnetic material, a third layer of a ferromagnetic materia...

An Integrated bracket for mounting a relay and an add-on block, the bracket comprises a plurality of walls, the plurality of walls includes a back wall, the back wall has a plurality of interlocking means for receiving the relay, a plurality of side walls are connected to the back wall, the plurality of side walls h...

ABSTRACT TRIPPING SYSTEM USING A COLLAPSIBLE MECHANISM AND A METHOD THEREOF The present invention relates generally to a system and method of tripping for circuit breaker and more particularly, to a tripping system using a collapsible mechanism to generate an impact force required to de-latch main mechanism of...

The present invention provides a modular switch disconnectorthat comprises a stacking arrangement. The stacking arrangement includes a plurality of stacking plates and a plurality of stacking screws such that the stacking plates position on mechanism housing before positioning of the modular poles forpreventing phys...

The present invention relates to an improved rotary mechanism for use in circuit breakers. The mechanism comprises gear assembly and fork means (3d). The gear assembly comprises a gear pin means (3g) and a gear means (3e) operatively engaged to said gear pin (3g). The gear means (3e) comprises plurality of engaging ...

The various embodiments of the invention provide an automatic transfer switch with a drum arranged inside a housing to displace insulation sheets to make or break a contact. Moving contacts are mounted in the housing to establish contact between terminals. Insulation sheets with connecting pins slidably attached to ...

The various embodiments of the present invention provide a self actuated mechanism to eject and relieve the moulded parts with multiple start internal threads. The self ejection mechanism includes a core insert with the replica of threaded profile required on component. A sleeve surrounds the core insert, which form...

Provided herein a keyless entry system preferablz a passive keyless entrz system for automatic locking or unlocking doors of a vehicle comprises a transceiver mounted in a vehicle, a portable key unit configured to communicate with said transceiver in a passive or an active mode, a LFa antenna linked to a door of th...

AN ELECTROMAGNETIC CONTACTOR WITH A LOCKABLE ARRANGEMENT IN OFF STATE

YES

The various embodiments of the present invention provide a three phase active rectifier system with a bidirectional power flow. The system has a controller connected to a converter coupled between a three phase ac power supply and a DC toad. The controller executes an algorithm to implement a space vector modulation...

The present invention relates to an improved preemptive rate of rise of current based actuating device for tripping circuit breakers/operating mechanisms when rate of rise of fault current exceeds a predefined value. The device comprises plurality of primary conductors (2), plurality of sensing means (3) magneticall...

Disclosed is an assembly for mechanically interlocking two circuit breakers for preventing simultaneous closure of the two circuit breakers. The assembly comprises a base plate disposed on the circuit breaker, and an actuator removably coupled with a spacer. The actuator is capable of receiving actuation from the sp...

A switching device adapted to convert rotational motion to linear toggle motion of operating knob and toggle motion of the operating knob to rotary motion of the knob transmitting predetermined magnitude of force to the knob, said device comprises housing (1), rotating component (3) accommodated in housing (1) where...

ABSTRACT ARC SPLITTER PLATE FOR AN ARC CHUTE ASSEMBLY AND A METHOD OF MAKING THE SAME. The present invention provides an arc splitter plate for an arc chute assembly to limit the duration and intensity of the current in circuit breakers, said arc splitter plate comprising: a single metal piece folded to provide ...

New generation test kit simulates real time AC field signal and determines the operability of the circuit breakers. It simulates test conditions for standard protection functions like Thermal Overload, Short circuit, Instantaneous, Current unbalance, Voltage unbalance, Under Voltage, Over Voltage, Earth fault etc. A...

The present invention relates to a sensing arrangement for measuring the amount of fuel dispensed accurately compensating for any change in volume arising due to variation in ambient temperature. The arrangement comprises microcontroller (7), temperature sensor means (1) being operatively connected to said micro-con...

The various embodiments of the present invention provide an Electrical Battery Quick Change Mechanism to replace a discharged battery with a fully charged battery in an electronic device rapidly and easily. According to one embodiment of the present invention, an electrical battery quick change system has atleast on...

The present invention generally relates to power supply distribution systems and particularly to three phase power supply systems. The present invention more particularly relates to three-phase four-wire systems. The present invention relates to the Physical arrangement of a current path to carry higher ratings of c...

The present invention relates to an improved rotary arrangement for automatic transfer switch used in contact systems. The arrangement comprises a housing (9), plurality of input terminals (7A, 7B) and output terminals (10) in the housing (9) which are connected to moving contacts (6A, 6B) of the switching system es...

The various embodiments of the present invention provide a stored energy type plug-in retractable module assembly. The module has a movable back plate connected through a slider mechanism to a front plate mounted with a handle and a state changer knob. The handle is pushed in to move the back plate to make the power...

A new design of multi-phase circuit breaker wherein the main current carrying parts of respective phase are split into two halves & interleaved, so that the ac resistance of the path reduces, while the effective inter-phase distance increases, resulting in the circuit breaker having higher continuous and short circu...

The various embodiments of the present invention provide a mechanism for centralizing strip or coils in press tool assembly by utilizing single or two piece centralizing punches of different sizes feasible at one or more locations. According to one embodiment of the present invention, a centralizer arrangement has a...

Provided herein a hardware based lock protection for reset control registers to protect for reset control register, comprises a peripheral performing a particular task, a high capacity programmable logic device (HCPLD) for resetting the peripheral after being incited and a controller for inciting the high capacity ...

The present invention provides an apparatus for unloading a cured tire and a method thereof. The apparatus comprising at least one chuck supporting shaft having at least one centering plate at one end and plurality of chucking paddle at other end, at least one cam plate, at least one rotating gear to provide rotatio...

A design and use of Breaker Status Module in plurality constitutes the following A memory unit capable of storing Status, Date and Time stampings up to 10 records Breaker status module housing LEDs for status visualizations. - A Micro controller acts as a central processing unit. - A Memory module stores Status, ...

The various embodiments of the present invention provide a DIN clip for mounting switching devices on DIN rail. According to one embodiment of the present invention, a springless DIN clip device has a base frame provided with a recess. A locking projection and a stay put locking feature are arranged in the recess. A...

The various embodiments of the present invention provide a differential contact movement mechanism for a draw out apparatus for MCC switchboards. According to one embodiment of the present invention. a differentiae contact movement mechanism is provided with a base support structure on which a cylindrical piston is ...

The various embodiments of the present invention provide a wirecut multiholder to hold the workpiece or jobs of round as well as rectangular shape. According to one embodiment of the present invention, a wire cut bed assembly for jobs with multiple shapes has a base support frame provided with a rectangular recess a...

A device for vibrating and acurately locating electrical contacts on base terminials in brazing.The device (1)comprises a vertically disposed obtuse angled arm (2)comprising a lower part(2a)and an upper part(2b).The lower end of the arm is adapted to abut contact(3)placed on a base terminal(4) with a fusible mater...

In one embodiment, a method of measuring harmonics in a power line comprises the steps of detennining a plurality of harmonic components in one or more power lines using Fourier transform analysis, and displaying the harmonic components in a graphical form, wherein the quality of the power line is a direct measure o...

The various embodiments of the present invention provide a position indication system for an electrical connection module in a switchboard. According to one embodiment of the present invention, a position indexing system has a rotating shaft to which an indexing cam is coupled positively. The cam presses a roller to...

The present invention is proposed to invent a method of indication that utilizes external simulation kit for electronic trip units to the various faults such as overload, short circuit (12T On & Off), instantaneous fault and earth fault (I2T On & Off). The invention incorporates different faults conditions as on Pow...

In some embodiment a system for calibrating fuel pumps in a fuel station, comprises a main processor board, a plurality of memory modules in communication with the main processor board, and said memory modules coupled individually to a plurality of fuel pumps, wherein the main processor board is adapted for selectiv...

The present invention provide a module and method for regulating voltage and indicating at least one status of an electric circuit. The arrangement comprising: a sensing means to sense an electrical signal from a common terminal of an electric circuit; at least one signal conditioning element to convert at least one...

The  various  embodiments  of the  present  invention  provide  a mechanical safety interlocking device. According to one embodiment of the present invention, a mechanical safety interlocking device has a module interlock arranged inside a housing. A module interlock pin is connected to the module interlock. A m...

The present invention relates to an improved operating mechanism of molded case circuit breaker. The mechanism comprises a housing (1), a fixed contact means (5), a moving contact means (4), a rotor means (2), and a mechanism module (3). The mechanism module (3) comprises side plate means (3a), trip plate means (3k)...

The present disclosure relates to contact locking mechanism, and more specifically relates to, a contact locking mechanism or method to enhance circuit breaker performance during a short circuit fault even when the protection release performance is kept constant. In an aspect, the circuit breaker can include a movin...

The design of a indicator in a machine with multiple shapes and color is claimed here. of a status indicator in a macs of machine through software control rather than The design state The alternative method of displaying hardware is claimed here in this invention. A soft indicator consisting of control through so...

ABSTRACT A ROTATORY CAM MECHANISM A rotary cam mechanism for low voltage switch gear products comprising: a duality of modular mechanism connected back to back by a single integrated actuating shaft; a plurality of spring loaded spring arms attached to said integrated actuating shaft; a plurality of horizontal r...

An assembly for sensing and monitoring temperature of circuit breakers and a method thereof are disclosed. Thermistors (10) for sensing temperature are mounted on external terminal connection (1) of fix compartment (3) of air circuit breaker. The sensed temperature output from the thermistors is provided to input te...

A device for riveting steel laminations and adapted to provide third degree of motion, the riveting device comprising plurality of plates (1,2,3 and 8), means (C1) mounted on the said plates and adapted for providing third degree of motion, means (6) adapted for holding together the lamination stack (13) to be rivet...

The various embodiments of the present invention provide a display device for hand held testing devices for circuit breakers to reduce the display intensity to increase the life of the battery and display screen. A control and circuit processing block is provided to regulate the operation of the display screen based...

The various embodiments of the present invention provide a rotary power contact mechanism for switchgear modules. The mechanism includes an actuating rod, a rotating rod connected to the actuating rod through a link, a slider pin, a spring assembly connected to the slider pin, a rotary power contact assembly mounted...

The embodiments of the present invention provide a contact system arranged with male and female contact assemblies on a horizontal plane. The male contact assembly is moved with respect to the female contact assembly to establish an electrical connection. Pluralities of each type of assemblies are stacked together u...

The present invention relates to an encapsulated Electro-Mechanical Totaliser (EMT). More particularly, the invention relates to an intelligent EMT and a microcontroller board sealed mechanically thereby providing handshaking betweent the microcontroller and the totalizer unit thus preventing tampering of the EMT. ...

The various embodiments of the present invention provide a flux shift device with an inbuilt electrical reset feature for air circuit breakers. According to one embodiment of the present invention, a flux shift device has a housing provided with a permanent magnet. A spring loaded plunger is arranged below the flux ...

This invention relates generally to a system for magnetic field shielding using ferromagnetic plates around conductors for use in circuit breakers comprising a plurality of ferromagnetic plates assembled in the slots provided on the back side of the housing which accommodates conductor paths. It can be used in all k...

MCCB Thermal Overload Release using snap action disc discloses snap action bimetal disc which is loaded with the spring which causes tripping. The trip time characteristics depend on the bimetal characteristics as well as loading of the spring. The need of heater is removed because terminal itself acts as heater whi...

N/A

The invention provides a method and a device for magnetic shielding in electrical equipment. More particularly, the invention provides for a sol-gel form of ferrite powder that is magnetically conducting and electrically non-conducting that advantageously reduces the undesirable effects of the induced EMI formed due...

Disclosed is a padlock assembly for circuit breaker. The padlock assembly does not allow operator to operate racking mechanism once padlocking is done, at both closed and open door condition. After padlocking, the rotation of a racking screw is not possible as the stopper of the racking screw interferes with a pin m...

The present invention relates to a trip mechanism for residual current device. The mechanism comprising a side plate (1) over which all components are assembled where side plate comprises a hole and plurality of projection, an actuator (2) comprises a latch pin where actuator which is assembled with a main sprin...

The present invention relates to a system and method for the management of prenatal images produced by the ultrasound machine while diagnosis. The system according to an embodiment of the present invention comprises an ultrasoimd engine which scans the prenatal images from the ultrasound machine and produces random ...

The various embodiments of the present invention provide a contact type infrared (IR) sensor probe and a contact type IR sensor system. According to one embodiment, the system has housing provided with a black body compartment. An aperture is provided below the black body compartment. An infrared (IR) sensor probe i...

N/C

The present invention relates to an assembly for enhancing correct completion of operation of circuit breakers and/or rotary operating mechanisms. The assembly comprises slider means (1) having rounded slot profiles (ID) for mounting the slider (1) in housing (6A) of the rotary operating mechanism. The slider means ...

The present invention relates to a device between a controller based card with an I2C [Integrated Circuit to Integrated Circuit - IC 2 IC - 2(IC) Bus and the keybord for the purpose of input of data in the binary form to the controller with an I2C bus and to a method for providing data using the said device. The pre...

The various embodiments of the present invention provide an interlock mechanism for Tap off Box (TOB) with Bus Bar Trunking system. According to one embodiment of the present invention, an interlock mechanism has a plunger assembly and an interlock assembly. The plunger assembly is mounted on a support plate holding...

The various embodiments of the present disclosure provide position indication and locking mechanism for a feeder module. The mechanism includes a rotating shaft coupled to the electrical component. A handle, an indexing bracket and an indexing guide are coupled to the rotating shaft. A spring arranged between the in...

Disclosed is a locking assembly for distribution boards/enclosures. The locking assembly comprises a bottom plate, a pin member and a top plate. The top plate is hinged with the bottom plate to form a housing that encloses the slider latch thereby preventing access to the slider latch. The pin member is configured i...

In some embodiment, a temperature measurement apparatus for a circuit breaker comprises a thermistor coupled to a circuit breaker. A trip unit coupled to the thermistor at a distance via a network. A microcontroller is coupled to the thermistor and the trip unit, wherein the output frequency of the thermistor varies...

A system capable of being configured with a spark ignition (SI) engine for improving the combusion characteristics thereof, the system comprising a capacitor discharge ignition circuit configured with a step up coil for discharging instantaneous spark energy to the step up coil; A spark plug for conveying instantane...

ABSTRACT The present invention provides a priority based uninterrupted power switch with a switching controller to set a threshold level and to assign a control signal to a switching transistor to assign a priority to generator power supply than a battery power supply to supply electrical power to a load, when both...

Applicant: LARSEN & TOUBRO LIMITED Abstract The present invention provides an accurate system for measuring the osteoporosis condition of members and specifically bones using a multi-parameter approach with more than three with specifically four parameters being measured. The parameters being measured are broadband...

A modular fuse switch (100) is disclosed. The modular fuse switch (100) (‘the switch (100)’) comprises cassettes (90, 95), terminal units (60, 65), a knob (40), a fuse (30), a pair of din-clips (20) and a plurality of rivets (10). The cassettes (90, 95) being identical serve as either a housing or a cover and compri...

N/A

The present invention provides a top mounted rotary mechanism that is mounted on top of a contact system adapted to providea manual independency in operation thereof. The rotary mechanism includes a slider-coupler arrangement wherein a slider and a coupler are arranged such that an electrical switch is effectively a...

The present disclosure relates to totally-enclosed installations or casings or enclosure, and more specifically relates to, shroud assembly to protect plugin points of plugin feeders when not in use, from ingress of foreign object. In an aspect, a shroud assembly can protect one or more plugin units from ingress of ...

The present invention relates to a simplified unloading device that is capable of transferring the cured tyre from the vulcanizer to the post curing stage without changing the horizontal orientation of the tyre thereby maintaining the concentricity and parallelism during the unloading process. The unloader (1) has s...

An improved arrangment of connecting Moving contact assembly with the main driving arm by use of a new male-female design of connetor, the connctor profiles design co-ordinated with front cover profile and Moving contact profile for facilitating easy re-connection.

The present disclosure pertains to a degaussing unit that can deliver a programmable bipolar constant current for a degaussing coil. The disclosed degaussing unit can receive exact current reference required for degaussing of a ship from a remote system controller through Ethernet and is capable of receiving and acc...

Disclosed is a braidless contact system (100) for a modular circuit breaker. The braidless contact system (100) is enclosed between a pair of cassettes (10A, 10B). The braidless contact system (100) comprises an incoming terminal (30), a braidless outgoing terminal (50), a moving contact assembly and a two-part shaf...

Embodiments of the present disclosure relate to hinged partition for segregation of switchboard. In an aspect the disclosed partition overcomes deficiencies of the conventional partitions wherein, it provides solution of partition to achieve the desired form but with minimal hardware fixing along with the flexibilit...

Disclosed is a mechanism for locking safety shutters in draw-out circuit breakers. The mechanism comprises a plurality of protrusions configured on middle portion of the safety shutters. Further, the mechanism comprises a top plate mounted on front side of upper half of the safety shutters. The top plate includes cu...

Disclosed is a trip circuit for earth leakage module (EL) comprising: a housing; a circuit breaker assembly in said housing for making and breaking an electrical connection comprising a connected a flux shift device (FSD) and Electronic trip unit (ETU); WHEREIN earth leakage module senses the leakage current to driv...

Disclosed is a padlocking device for circuit breakers. The padlocking device includes a base member, a torsion spring and a cover member. The padlocking device does not obstruct view of any information, indicators and data printed on circuit breaker, while serving all required functions of padlocking. The padlocking...

The present invention provides a system, apparatus and method to detect and indicate series arc fault events in current supplied by an electrical power source to an electrical load in the power line. The system comprising an analog processing module and an ARC detection module. The analog processing module configure...

Disclosed is an assembly for energy saving endurance testing for a hydraulic cylinder. The assembly comprises a test hydraulic cylinder, a load hydraulic cylinder having a second piston rod end coupled to a first piston rod of the test hydraulic cylinder thereby forming a linkage therebetween, and a drive hydraul...

An auto-calibration process involves a hardware interface between HMI and electronic trip unit. In the HMI, de-rating value is selected for a given trip unit and accordingly voltage signal is generated by hardware interface. The output voltage value corresponds to output of the sensor at the rated value of breaker (...

Disclosed is a compact miniature circuit breaker assembly, The compact miniature circuit breaker assembly comprises a base housing with a half module width, The base housing includes a contact system, a trip mechanism, a magnetic release, a thermal release, an arc chute, an arc runner, terminals, shutters and a box ...

An electric switching device consists of a novel vent system where a metallic vent is sandwiched in between at least two insulating vents on either side. During the event of an abnormal electric condition, an electric arc is struck in a switching device, such as a circuit breaker. The metallic vent, forming an integ...

Disclosed is a safety shroud for the purpose of covering at least one empty opening in a switch board. The safety shroud comprises of a curved surface and two or more grips. The curved surface is always facing convex towards the at least one empty opening in the switch board. The two or more grip elements allow the ...

Disclosed is a contact system (100) for a molded case circuit breaker. The contact system (100) comprises a moving contact (10), a fixed contact (20), a holder (30), a shaft (40) and a spring assembly (50). The moving contact (10) includes a spring (4) configured on a side thereof that ensures a seamless current flo...

An electric power distribution system for short circuit protection, having a plurality of circuit breakers with at least one upstream breaker and at least one downstream breaker electrically coupled to each other is disclosed. The electric power distribution system comprises of at least one circuit breaker configure...

In one implementation, a Drawout or withdrawable type Air Circuit breakers assembly, comprising housing, a fixed terminal to be mounted to at least two holes in a wall of the housing, and an adaptor (11) is disclosed. The assembly comprises a terminal-housing assembly (5) having the fixed terminal (10) comprising a ...

Disclosed is a moving bridge for a switching device/disconnector. The moving bridge is housed in a mechanism cassette. The mechanism cassette operates two switch-disconnectors and provides mechanical interlock therebetween. The mechanism cassette includes a pin member capable of hitting one side of a wall of the mov...

The present invention provides a stored energy motor operating mechanism (150) for rotary molded case circuit breakers. The stored energy operating mechanism (150) comprises a base (10), a motor (20), a drive shaft (30), a first pinion (40), a second pinion (50), a multi level rack (60), a spring (70), a pair of sup...

Disclosed is an operating mechanism (150) for secondary isolating contacts (SIC) of a circuit breaker (200). The operating mechanism (150) comprises a male secondary isolating contacts block (104), a female secondary isolating contacts block (108), a pair of first brackets (112), a second bracket (116), an upper bra...

Disclosed is a half module miniature circuit breaker for switchgear devices/ distribution boards. The half module miniature circuit breaker comprises a housing, an operating mechanism, an electromagnetic release mechanism, an arc chamber, a thermal release mechanism, a terminal with a box clamp and screw assembly an...

The present invention provides a stored energy motor operating mechanism (150) for switching device operations. The stored energy operating mechanism (150) comprises a motor (10), a drive shaft (20), a pinion (30), a gearing system (50), a rack (60), a spring (70), a pair of support plates (80), a d-shaft assembly (...

The present invention discloses a mechanism for establishing multiple stable contact positions in a switching device. The cam-operated toggling mechanism comprising of a manually actuating shaft, controlled by the operator. The actuating shaft being coupled with a vertical rotor drives the vertical rotor which in tu...

A roto-shift double latching mechanism for actuating electrical devices is provided. A rack and pinion arrangement is mounted on the bottom housing. The rack and pinion arrangement has a slot corresponding to a slot on the housing for mounting over the knob of the electrical device. A charging spring is connected be...

A braid-less sliding contact assembly consists of a moving contact with a U-spring assembled on it The fixed contact is assembled with the said moving contact via pin and compression spring. The said fixed contact is placed on a bottom housing and closed by a top housing. The said fixed contact is then assembled on ...

The present invention discloses a technique for current sensing using PCB based Rogoswki coil consisting PCB coils arranged discretely around the carrying current conductor. The spacing between the PCB coils encompassing the conductor is decided keeping in mind the risk of errors in integration owing to large spacin...

Disclosed is a linkage mechanism for a door of a switchboard cabinet. The linkage mechanism comprises a first bracket, a second bracket, a first lever, a second lever, a sleeve/stopper and a pin. The linkage mechanism engages with the door of the switchboard cabinet at one end and a corner pillar of the cabinet swit...

The present invention relates generally relates to low voltage switchgear. More particularly, the present invention relates to molded case circuit breakers using bimetal for overload protection. The present invention is basically to reduce the number of iteration to one and hence reduce the calibration time drastica...

Disclosed is a system (100) for implementing an embedded web server based on a ultra low-power microcontroller is disclosed. The system comprises an electronic trip unit (104) including the ultra low-power microcontroller (106) to monitor an operation of an electrical circuit, wherein the electronic trip unit works ...

The present disclosure relates to systems and methods for overload protection in electrical devices/loads. Systems and methods of the present disclosure help implement overload protection by using multiple selectable overload curves such as I2t, I4t, SI and VI for different time slots of operation of attached electr...

Disclosed is an improved venting system in an arch quenching system (5) of an electrical circuit breaker (1) of the type having vents (2) in said electrical circuit breaker for expelling arc products generated during fault clearance is disclosed. The improved venting system comprises of at least one vent (2) having ...

Disclosed is amodular thermal release (TM) to issue the trip command to the mechanism of the breaker. The thermal release consists of a heater (1), bimetal (2), bimetal calibration screw (3), shaft (4), temperature compensation bimetal (5), latch (6) and tripper (7). During overload condition, as discussed earlier, ...

Disclosed is microcontroller emulation using non volatile memory by replacing external memory with another microcontroller which would emulate UV EPROM or E2PROM. The proposed invention would be drop in replacement on PCB without causing any change in circuit design or logic re-design of Trip Unit. This invention sh...

The present invention provides an auxiliary (AUX) contact actuation arrangement for the circuit breaker. The arrangement comprises: an auxiliary switch assembly comprises at least three terminal(s) and a auxiliary actuator link; an operating mechanism assembly; a rotating shaft having a rotor pivot profile and an ac...

Disclosed is an alternate arrangement of multiple current sources scheming using a single servo system for interlocking multiple drives system by servo application. The system comprises of at least one alternating current (AC) source, wherein one phase of the at least one alternating current (AC) source is supplied ...

The present invention relates to an improved high speed switching mechanism for use in circuit protection devices. The mechanism comprises plurality of mechanism plates, driveshaft means secured between the mechanism plates, pivot means, movable contact means, fork means hinged with the said plates on its outside su...

Disclosed is a sliding contact system of a switchgear. The sliding contact system comprises a plurality of clamps, a rotor, a terminal contact part, a plurality of leaf springs, a plurality of claddings and a plurality of moving contacts. The plurality of clamps is a C-clamp that helps in withstanding the load of th...

Disclosed is a leaf spring mechanism for mounting and im-mounting of an electrical device. The electrical device is mounted on a DIN-rail. The electrical device comprises a housing. The housing includes a protrusion configured on a back side thereof. The protrusion supports the leaf spring mechanism therein. The lea...

Disclosed is a stored energy operating mechanism (100) for a molded case circuit breaker (200). The stored energy operating mechanism (100) comprises a motor (10), an integrated gear assembly (20), a shaft (30), a multi-link scotch-yoke assembly (60) and a spring assembly. The multi-link scotch-yoke assembly (60) co...

Disclosed is an electro-magnetic actuating system for a circuit breaker. The electromagnetic actuating system comprises a moving core, a plunger, a coil, a spring and a magnetic frame having an upper bend and a lower bend. The magnetic frame is a U frame that produces force only in the direction of operation thereby...

Disclosed is a Rogowski coil with variable cross-section core in circuit breakers. The present invention provides a Rogowski (current measuring coil) with variable cross section core which provides enhanced secondary output at reduced volume. The present invention describes a Rogowski coil with variable cross-sectio...

Disclosed is a rotary mechanism for a switching device. The rotary mechanism is mounted on top of a contact system. The contact system includes a plurality of first rotors. The rotary mechanism comprises a plurality of couplers, a connector shaft, a second rotor and an arm with a spring. The top mounted rotary mecha...

Disclosed isan improved double break low voltage moulded case circuit breaker.In one implementation, the modular pole construction disclosed in current invention allows assembling one or multiple poles together to form a single or multi-pole breaker. This standardization simplifies assembly line/process and reduces ...

Disclosed is assembly for packaging articles. The assembly comprising a base plate having a plurality of locators mounted thereon, and foam padding capable of being mounted over the base plate for absorbing shocks during transit The foam padding receives the article thereon. Further, the assembly comprises a carton ...

Disclosed is a mechanism for arc travelling in circuit breaker, The mechanism comprises housing having fixed contacts and moving contacts configured therein. Specifically, opening of the fixed contacts and the moving contacts causes an arc to / produce therebetween. Further, the mechanism comprises an arc runner pos...

Disclosed is a device for door alignment. The device comprises a body member having an opening adapted thereon for hardware to secure the body member to a fixed structure of a panel. The body member further comprises at least two projections configured on rear portion thereof. The projections are capable of being se...

Disclosed is a peak calibration method to compensate the transient response of RC circuit. The method to enhance working of an electronic trip unit by no trip or nuisance trip at startup of said electronic trip unit due to erroneouscurrent computation, using a firmware comprises ofobtaining (402) at least one output...

Disclosed is a mechanism for auto resetting of stay put locking feature of a DIN clip for mounting a circuit breaker on a DIN rail. The circuit breaker includes a chamfer profile configured on housing thereof. The mechanism comprises a DIN clip having a projection adapted thereon, and a slot configured thereon for i...

Disclosed is a magnetic fault indication system for a circuit breaker. The fault indication system comprises a slider, a flexible member, a first latch, a second latch, a lever, an indication flag and a slot. The magnetic fault indication system includes a single compliant component thereby reducing an assembly comp...

Disclosed is a latching mechanism for split doors of an enclosure. The latching mechanism comprises a latching member configured on inner side of at least one door of the split door. The latching member is supported by a spring mechanism. The latching member holds the split doors together when closed. Further, the l...

Disclosed is an arrangement for converting non-flexible component into click-fit type component for fixing the non flexible component in slots of a structural member of a panel. The arrangement includes a plurality of adaptor members. Each adaptor member of the plurality adaptors includes an upper portion having a s...

Disclosed is an assembly for clamping a transformer on a link. The assembly comprises a first component and a second component. The first component includes a first stepped profile, a second stepped profile and a first opening. The second component includes a first ramp/chamfer profile, a second ramp/chamfer profile...

Disclosed is a single pole modular changeover switch. The single pole modular changeover switch of the present invention accommodates two box clamps placed one above the other without resulting in an increase in pole width and without requiring extra space. The two box clamps are separated by an inter-phase barrier ...

Disclosed is a packaging assembly for articles. The packaging assembly includes a bottom frame pack assembly having at least four edgeboard frames secured together, at least four edgeboard columns extending vertically from the bottom frame pack assembly, and a base plate being capable of securing to the bottom frame...

Disclosed is a mechanism for arc guiding in a circuit breaker. The mechanism comprises housing having fixed contacts and moving contacts configured therein. The opening of the fixed contacts and the moving contacts causes an arc to produce therebetween. The mechanism further includes an arc runner positioned within ...

Disclosed is an extension assembly for a fuse puller device. The assembly comprises a body member having at least two fuse puller tags extending therefrom. The least two fuse puller tagsare capable of removably engaging with the fuse puller device. The extension assembly further includes a guide plate confined withi...

Disclosed is a toroidal core for a current transformer. The current transformer includes at least a pair of windings that wind on the toroidal core. Each winding of the pair of windings has a pair of terminals. The toroidal core of the present invention includes at least two or more discs that are capable of being s...

Disclosed is a packaging system for articles. The packaging system comprises a base plate having a plurality of holes configured thereon, and a padding configured over the base plate for absorbing shocks during transit. The padding includes a plurality of openings configured thereon. The plurality of openings of the...

Disclosed is an interlocking mechanism for an electrical switching device. The interlocking mechanism comprises a mounting plate, a first slider plate, a second slider plate, a cover plate, a cam, an actuator, a plurality of rollers, a plurality of clinch studs, a pair of caps and a plurality of springs. The interlo...

Disclosed is a high rupturing capacity fuse. The high rupturing capacity fuse comprises at least two end plates, at least one encapsulated fuse element and an insulating body housing the at least one encapsulated fuse element. The insulating body is made up of a ceramic material having low alumina content and filled...

Disclosed is a cable terminal box assembly. The cable terminal box assembly comprises a terminal, a cable and a box clamp. The cable includes at least one conductor that is adapted for securely entering in the terminal. The at least one conductor includes a flange that locks into a corresponding groove on the box cl...

Disclosed is an integrated multi-gear electrical operating mechanism (100) for a molded case circuit breaker (200). The integrated multi-gear electrical operating mechanism (100) operates the molded case circuit breaker (200) to any one of ON and OFF positions in any of an automatic operation and a manual operation....

Disclosed is an interlocking mechanism for two switching devices such as contactors. The interlocking mechanism comprises a first lever, a second lever, a first stopper, a second stopper, a first spring, a second spring, a first pin, a second pin and an extendable cable. The interlocking mechanism prevents a second ...

Disclosed is a switching mechanism for a residual current circuit breaker. The switching mechanism comprises a lock lever, and a lever connected to the lock lever by a lever link. The lever includes a cam surface with sharp corners which overlaps and latches the lock lever. Further, the switching mechanism comprises...

The present invention provides a switchgear device. The switchgear device includes at least two housings that when placed over one another forms a single pole switchgear device thereby eliminating need of a separate cover to form the single pole switchgear device. The housing is made such that, assembly is done on a...

Disclosed is a phase barrier/phase separator for multiphase circuit breaker. The phase barrier/phase separator includes an elongated body member having at least two windows configured thereon, an opening configured on the elongated body member for securing hardware thereto for fixing the elongated body member to a h...

Disclosed is an interlocking mechanism for use in moulded case circuit breaker. The interlock mechanism comprises the knob which includes a first member secured to a fork of an operating mechanism and a second member capable of removably securing to the first member. Further, the interlock mechanism comprises the fr...

Disclosed is a gear linkage mechanism (100) for a switching device (200). The gear linkage mechanism (100) is compact and mounted on top of a contact system (180) of the switching device (200) thereby utilizing lesser space in a distribution box panel. The gear linkage mechanism (100) actuates the contact system (18...

Disclosed is an arrangement of electrical switching devices with a distribution block to make a compact enclosure with particular forms of separation. The arrangement comprises a vertical busbar and a distribution block. The distribution block comprises a minibus assembly, an electrical device adaptor assembly a...

Disclosed is an assembly (100) of modular changeover contactors with an interlocking arrangement for a switching device. The assembly (100) comprises a first contactor, a second contactor, a changeover mechanism (60) and an electromagnetic system. The contactors are connected with the changeover mechanism (60) posit...

Disclosed is an arrangement of electrical switching devices with a distribution block to make a compact enclosure with particular forms of separation. The arrangement comprises a vertical busbar and a distribution block. The distribution block converts a single power supply input/point into many power outputs in a v...

Disclosed is an auxiliary contact device for a switching device. The auxiliary contact device is mounted to a bottom of any switching device by utilizing lesser space on a din-rail inside a distribution box. The auxiliary contact device comprises a lever and a micro-switch. The lever is activated by a moving contact...

The present invention relates to the carburizing process of latch, and more particular to heat treatment process of mechanism component to increase the service life. The present invention provides a method for carburizes heat treatment of low carbon steel to increase the wear resistance, strength and minimum distort...

The present invention provides a contact erosion indicator used in switchgear for indicating the status of contact condition. The arrangement comprises: a contact system; an indicator (5) having substantially step structure indicating condition of the contact(s) (1). The arrangement positioned in the switchgear to m...

Disclosed is a system and method for response time based access for setting of circuit breakers. The present invention relates to electronic trip units of circuit breakers and display modules connected to it to provide an interactive user interface for easy monitoring and parameterization. The display module provide...

Non-Contact Seam Tracking cum Data Logging System" comprises of non contact type sensors like a digital camera, laser displacemnent sensor, a software algorithms for correcting the welding torch position according to sensor feedback with an accuracy of 0.5mm, an analog I/O module for measuring the instantaneous valu...

Disclosed is an operating mechanism for a modular device (100) such as a modular changeover switch. The operating mechanism comprises a knob (60), a bridge assembly (70) and a bridge pin (80). The knob (60) includes a cam profile (58) for guiding a bridge (62) of the bridge assembly (70) that is then locked in a par...

Disclosed is a linear electromagnetic operator (500). The linear electromagnetic operator (500) comprises an electromagnet assembly (100), a cover assembly (300) and a mounting plate assembly. The linear electromagnetic operator (500) facilitates ease of coil replacement, ease of mounting on a switching device (600)...

A method for earth fault detection using current unbalance is disclosed. In one implementation, the method uses neutral presence and current unbalance to avoid tripping if current unbalance is above a predefined threshold. Earth current is calculated using vector sum. If Earth current is above a predefined threshold...

A can interface between an electrical trip unit (102) of a circuit breaker is disclosed. The ETU (102) in the present invention is connected to the CAN communication module (104) via a FRC connector (106). The CAN module (104) consists of a CAN trans-receiver IC (118) which helps in the transmission and reception of...

The present invention provides an improved trip circuit module for earth leakage device mechanism for operating an electrical switching device during an earth leakage condition in an electrical circuit and a method thereof. The electric trip module by which the ETU and the EL device can be independently or simultane...

An improved racking mechanism with auto-latch and de-latch arrangement in a circuit breaker is disclosed. The draw out type of circuit breaker is supported on the rail assembly (12), which is an integral part of a cradle assembly (11). The cradle assembly consists of the base plate (13), racking assembly (14), side ...

Title: DOUBLE CATCH DOOR LOCKING ARRANGEMENT IN A PANEL The invention relates to improved version of door locking of switchgear panel structure, which provides a higher withstand and pressure holding capacity with easier latching arrangement, thereby enhancing safety for the operating personnel. The panel structure...

The present invention relates to a stored energy operating mechanism used in circuit breaker for switchgear products. The present invention provides a motorized operating mechanism of circuit breaker with dynamic latch arrangement to assist positive closing of the circuit breaker during its reverse travel. This will...

Disclosed is an electric circuit breaker arc chute with an improved filter assembly to provide an improved arc quenching and arc products filtering using a filter concept. The arc chute filter, by virtue of its design provided helps in better arc quenching performance, prevention of emission of flame and/or ionized ...

The improved circuit breaker comprises of a first assembly (15), a second assembly (18), a third assembly (22), a fourth assembly (32), a fifth assembly (44), a sixth assembly (47), and a seventh assembly (50). The said sixth assembly (47) is a complete breaker assembly combining said first assembly (15), said secon...

An improved operating mechanism for operating and controlling of circuit breaker is disclosed. The improved operating mechanism comprises of an operating knob (4i) means fixed onto a fork link (4f) means which drives a dead-centre based mechanism consisting of a plurality of upper link (4b) means, a plurality of low...

Disclosed is an improved operating mechanism for circuit breakers. A circuit breaker operating mechanism (3) having multiple or single pole is disclosed. The circuit breaker operating mechanism (3) comprises of linkages coupled using revolute joints in a revolute manner, wherein at least one of said plurality of lin...

The present invention relates generally relates to packaging of circuit breaker. More particularly, present invention provides packaging pads with cushioning feature which will protect the circuit breaker from vibration and jerk during transportation and providing flexibility to packaging of the circuit breaker. The...

Disclosed is padding for electrical devices. The padding comprises a first side panel, a second side panel, a front panel, a rear panel, a top panel and a bottom panel. The top panel includes a plurality of blocks pasted on each corner on a bottom side thereof Each block of the plurality of blocks includes a slot on...

A molded case circuit breaker (MCCB) with a contact system (1) assembly, an operating mechanism (2) assembly, a release (3) assembly, and other parts (4) forming outer body is disclosed. The molded case circuit breaker (MCCB) comprises of at least one pole (11) assembly in the contact system (1) assembly. The operat...

Disclosed is mechanism cam assembly for motor control centre (MCC) module of a switchboard. The assembly comprises a cam secured over a shaft of the MCC module. The cam is being capable of moving through and fro along the length of the shaft. The cam includes a helical slot configured along surface thereof, wherein ...

Disclosed is a magnetic tripping arrangement for electrical protection devices such as lower rated circuit breakers. The magnetic tripping arrangement comprises a moving magnet that is designed to achieve generation of additional magnetic forces that produce multiple flux linkages between the moving magnet and a fix...

The present invention provides an arrangement for actuation of TAC actuator having different pivot axis than Latch link of the circuit breaker. The arrangement for actuation in a circuit breaker comprises: an actuator comprises an actuator pivot point and a trip alarm contact interface point;a latch link having an a...

Disclosed is a tripping device (100) for thermal overload relay. The tripping device (100) comprises a bimetal element (10), a heating element (20), a coupler/joint (30), an insulating element (40) and an incoming terminal (not shown) and outgoing terminal (not shown). The heating element (20) is made up of at least...

Disclosed is an interlocking assembly for a switchboard panel door for locking with a draw-out type of circuit breaker. The interlocking assembly comprises an actuating link, a cradle component, a panel door component and a stopper. The actuating link facilitates the interlocking assembly to function in "Test" posit...

The present invention relates to an improved patient monitoring device. The device comprises a modular enclosure, a controller means positioned inside said enclosure converting various physiological signals into their corresponding digital forms, plurality of detachable plug-in modules receiving various physiologica...

The present invention provides a system for voltage sampling in the circuit breakers. The system comprises: a voltage module; a leaf spring contact; the leaf spring contact operatively connected to the voltage module and the voltage module operatively connected to a release assembly; a electronic processing unit ope...

The present invention relates to an improved thermo magnetic release assembly for use in multi pole moulded case circuit breaker. The assembly comprising housing (1), overload shaft means (12), trip actuator means (9), plurality of spring means (6,7,8), plurality of knob means (13,14), trip latch mechanism, an elect...

Disclosed is an improved contact system with contact locking mechanism of the moulded case circuit breaker (MCCB). The contact system comprises of a driveshaft (1), an extension spring (2), a toggle link (3), a floating pin (4), an upper moving contact (5) with a slot, a contact pin (7), a toggle link pivot pin (8);...

The present invention provides an arrangement for fast tripping of circuit breaker during low current ground faults at the instant of closing the breaker. The arrangement for fast tripping of circuit breaker comprises: a power supply connected to a load; plurality of sensor(s) means; a trip mechanism circuit for tri...

Disclosed are devices, systems, and methods of testing the basic functionality and programming of the electronic trip unit of a microprocessor based circuit breaker using a battery operated hand held test kit. The proposed kit is designed in a manner to make it user friendly, compact and portable. The front display ...

Disclosed is a system and method for dynamic threshold setting in circuit breakers. The method for dynamically setting a threshold of at least one circuit breaker, in a system characterized by having a plurality of circuit breakers with a trip unit and a communication module and arranged to form an upstream or a dow...

Disclosed is a Draw out type of circuit breaker supported on the rail assembly or any equivalent draw-out assembly, which may be an integral part of the Cradle assembly. The Cradle assembly (11) consists of the base plate (12), Racking assembly (13), side plates (14) for guiding breaker and rail assembly (15). Racki...

The present invention provides a mechanical assembly of linkages for operating the contact system in circuit breaker. The mechanical assembly is simple and providing high mechanical life to the circuit breaker. The features of the invention are the groves created in the mounting members and the protrusion provided i...

Disclosed is a connector assembly for connecting a fixed cabinet and a moving switching module conductor. The connector assembly comprises of a fixed cabinet, a moving switching module conductor, at least one conductor strip, a supporting structure, a leaf spring, and a thin strip. The fixed cabinet further comprise...

Disclosed is an improved circuit breaking technique for miniature circuit breaker. The purpose of the disclosed invention is to protect the appliances and equipments from damage using circuit breakers to sense the fault in an earlier stage and quench the arc at lower current with lesser time, which leads to lower en...

Disclosed is a Draw out type of circuit breaker supported on the rail assembly or any equivalent draw-out assembly, which may be an integral part of the Cradle assembly. The Cradle assembly (11) consists of the base plate (12), Racking assembly (13), side plates (14) for guiding breaker and rail assembly (15). Racki...

Disclosed is an electrical indication of positions in a draw out type of circuit breakers. The circuit breaker (17) is disclosed. The circuit breaker (17) comprises of a racking mechanism for performing racking operation by racking-in and racking-out said circuit breaker (17) into a cradle (18), characterized in tha...

A packaging assembly and apparatusfor securing MCCB’s used widely in electrical power distribution is provided. By this the MCCB’s are snugly seated in the packaging assembly, which essentially consists of plastic padding (3) made of reusable and recyclable materials.The specialized packaging arrangement for MCCB’s ...

System, a communication device, and method thereof for status detection and control of circuit breakers are disclosed. The communication device (103, 205) comprises a status sensor circuit (202) configured to sense a status signal of the breaker on at least one input terminal, transmit the same to a microcontroller ...

An ingress protection and handle for plug-in MCCB is disclosed. In one implementation, a plug-in unit, for at least one circuit breaker, formed with at least one base so as to insert said circuit breaker into said plug-in unit, in use, is disclosed. The plug-in unit comprises at least two guides (1) in said at least...

Disclosed is a method and system for detecting earth faults in at least one phase system and displaying the earth faults detected using a phasor diagram on the display of a circuit breaker. The electric current signal passing through a circuit breaker is detected for conditioning the signal in order to generate a wa...

A method and an apparatus to limit the transient peak of Passive Filters in Circuit Breakers using Air Core Sensors by capacitor compensation are disclosed. In one implementation, the only change that is performed is the addition of a Capacitor C7 401, in the non-inverting terminal of the operational Amplifier. The ...

Disclosed is a control circuit to control an electrically operating mechanism (EOM). The control circuit comprises of at least one electro-mechanical relay and at least one actuator. The at least one actuator further comprises of at least one micro-switch arranged in a predefined logical sequence to enable the rotat...

Disclosed is an electrical switchgear mechanism. The electrical switchgear mechanism comprises of at least one first link (1) positively housed on at least one first slot of at least one close shaft (11) and at least one second link (2) positively housed on at least one second slot of at least one trip shaft (21). A...

The present invention provides an encapsulated mould assembly for a vacuum contactor, therefore providing protection to human life with proper electrical insulation. The encapsulated structure provides more electrical insulation, free from dust & mechanical support for vacuum interrupter and fuse assembly. If the ar...

The present invention provides a multi-tier arrangement of a medium voltage circuit breaker. In the present arrangement each circuit breaker consists of an encapsulated pole module assembled at an equal distance from each other, a mechanism to drive the pole modules and a unique rack in and rack out mechanism thereb...

Disclosed is a low power serial communication with modified duty cycle of the data line is disclosed. A novel communication method for devices with internal pull-up resistors is disclosed. The data transmitted during the communication is transmitted with a set duty cycle. The duty cycle value could be varied based o...

Disclosed is a current sensor unit assembly. The current sensor unit assembly comprises of a sensor unit and a busbar. The sensor unit further comprises of a power up coil, a magnetic core with a core cap, a sensing coil, an air core, an upper enclosure and a bottom enclosure. The magnetic core is wrapped inside the...

Disclosed is an auxiliary contact block for electrical contactor is disclosed. The electrical contactor comprises of a moving contact (3) and a stationary contact (1, 2, 10, and 20). The moving contact (3) further comprises of at least one screw (9) and at least one spring (5). The at least one screw (9) is further ...

Disclosed is an improved circuit breaking technique for miniature circuit breaker. The purpose of the disclosed invention is to protect the appliances and equipments from damage using circuit breakers to sense the fault in an earlier stage and quench the arc at lower current with lesser time, which leads to lower en...

The present invention provides an improved mechanism-rotor shaft assembly for molded case circuit breaker. The assembly comprises a housing; a contact system within housing comprises fixed contacts and moving contacts; a drive shaft assembly within housing comprises a rotor shaft (R1) having slots (R11, R12); an ope...

Disclosed is a compact design and arrangement of terminals for multi-functional modular devices. In one implementation, a terminal arrangement for a device with multiple input and multiple output signals is disclosed. The terminal arrangement characterized in that, having at most five terminals on each side, at most...

An improved means of visual indication for circuit breakers a circuit breaker with an improved display is disclosed. In one implementation, the circuit breaker comprises a power supply module (1); a signal conditioning module (2); a data processing module (3) having at least one controller logic; a display module (4...

Disclosed is an improved rack travel in rotary operating mechanisms and motor operators for MCCB. The present invention enables effective use of 3-gear and a rack arrangement philosophy wherein the power input gear (6) which either receives power through motor and gearing arrangement or manual rotary movement of ope...

The invention relates generally to the reliable, easy and time saving method of make break testing of relay for AC-15 where the electromagnetic coils are used instead of pneumatic to operate the relay which will increase the mechanical life of relay because the force/torque exerted by the electromagnetic coil is les...

The present invention provides a current sensor conjunction with isolated system voltage measurement module. The present invention provides an assembly of sensor(s) for sensing current and voltage in a circuit breaker. The assembly comprises: a self powered current sensor comprises a sensing coil, a magnetic core cu...

Disclosed is a system (100) and method (400) thereof for providing a limited access to various protection and system settings stored in a memory of said electronic trip unit (ETU) (102). In one implementation, the system (100) comprises of a communication protocol (106) to provide said communication between said ele...

The present invention provides a double interface arrangement which utilize less space to provide IP even with higher angular travel of knob. Two interfaces along with the knob cover the entire area of opening space created during switching of breaker and provide IP. The arrangement comprises an ingress protection a...

The present invention provides an arrangement which reduced the repulsion threshold and improved arc quenching in switchgear threshold. The present invention provides an arrangement which arranges the ferromagnetic material, ablative material, and arc shield at an intended closeness with the moving contact and arc w...

Disclosed is a supporting bracket and an assembly for mounting a supporting bracket (14) to support at least one pole shaft (13) on a circuit breaker housing (16) of a circuit breaker is disclosed. The assembly comprises of the at least one pole shaft (13), the supporting bracket (14) and the circuit breaker housing...

Disclosed isan improved microcontroller based pulse width modulation circuit and method thereof for a circuit breaker.The proposed invention is used for supply voltage regulation in microcontroller based electronic trip unit of circuit breakers. The microcontroller used has an internal analog comparator and digital ...

The Present invention relates but not limited to Gear arrangement in Electrically Operating mechanism (EOM) for Changeover Switch. The present invention provides a gear arrangement of an electrically operated mechanism for driving a Changeover switches . The present invention provides a higher torque conversion whic...

Disclosed is an operating mechanism for a counter assembly (100) of a circuit breaker (200). The counter assembly is accessible from a front fascia (160) of the circuit breaker (200). The operating mechanism is operably connected with the main mechanism of the circuit breaker (200). The counter assembly (100) is in ...

The present invention provides a rotary mechanism for the operating contact system which is intrinsic with the MCCB. The mechanism comprises: a fork attached to a mounting plate(s); a fork gear connected to the fork by means of a slot arrangement; a slider gear; a rotary knob gear having a profile protruding outward...

The present invention provides an assembly with mechanical override capability on completion of a predetermined degree of rotational motion in gear box. The clutch assembly operatively integrated into the gearbox, which fundamentally decouples the gearbox output torque from the shaft which delivers the said torque t...

This invention relates generally to a switching apparatus and more particularly to a No load switching apparatus with a racking mechanism for complete protection of the system. The invention provides for three position disconnection for isolating a load and further connecting it to EARTH comprising: an enclosure (1)...

The present invention provides a novel contacts system arrangement for two pole compact modular circuit breaker. The two pole breaker having two set of terminals on either side for incoming and outgoing circuit. The arrangement comprises: a fixed contact assembly comprises at least two fixed contact (s) with a conta...

The present disclosure relates to test circuit in residual current circuit breaker (RCCB). The disclosure provides RCCBs incorporating test circuits, which helps user to check the health of RCCB irrespective of configuration of use such as phase-to-phase application or phase to neutral application. More particularly...

Accordingly, the present invention provides an interlocking mechanism for a withdrawable module of a switchboard. The interlocking mechanism includes a mechanism handle and a short circuit protection device (SCPD). The mechanism handle of the present invention prevents an engagement of power contacts when the SCPD i...

The present invention provides an adjustable toggle mechanism for controlled resetting of poles in circuit breakers. The mechanism comprises: a spring holder bracket comprises an adjustable link; a main bracket; a locking pin; a toggle spring assembly comprises a spring holder; a guiding pin; a toggle spring member;...

Disclosed is a door interlock assembly of a motor control centre (MCC) module. The door interlock assembly comprising a base member secured to a door of the MCC module, a first lever, a spring, a bracket and a connecting means. The first lever deflects and slides through a sliding bend thereof to snap fit/lock onto ...

Disclosed is a padding for holding electrical devices. The padding comprises a first side panel, a second side panel, a front panel, a rear panel, a top panel and a bottom panel. The top panel includes a first set of at least two extended portions for locking movement of the electrical device and the bottom panel in...

Disclosed is a miniature circuit breaker. The miniature circuit breaker comprises a housing, a box clamp, an U-frame. an arc runner frame, a moving contact, a fixed contact, a coil welded to the box clamp, a bimetal joined to the U-frame, a first braided wire connected to the bimetal, a second braided wire, a knob a...

Disclosed is a rotor shaft assembly for a circuit breaker. The rotor shaft assembly comprises a moving contact capable of removably connecting to a fixed contact thereby forming any one of closed and open condition therebetween. Further, the rotor shaft assembly includes a spring arranged between spring holders. The...

Disclosed is a biometric authentication for access to assemblies inside a switchboard. In one implementation, a system and method for biometric authentication for access to assemblies inside a switchboard and to change the trip settings of the circuit breakers inside along with low zone protection is disclosed. The ...

The present invention provides an arrangement of mechanical clamping with multiple clamping points, horizontal and compact access for tightening hardware’s which is easy for manufacturing and use.The arrangement comprises: a member assembly comprises at least two member(s) having tapered surface at the end(s); a con...

An improved double-break circuit breaker rotor construction for current breaking in circuit breakers is disclosed. The improved contact system comprises of a rotor (1) with at least one moving contact (2); at least two rotor covers (3a, 3b); at least one spring assembled in a spring holders (5); wherein when said mo...

An adaptive thermal overload protection system (102) and method thereof for protecting a motor from overheating, by tripping the motor on reaching a maximum permissible percentage of thermal capacity used (TCU) is disclosed. The adaptive thermal overload protection system comprises of a numerical relay (104) for det...

The present invention provides a control circuit adapted for measurement of remaining life of a plurality of moving contacts and a plurality of stationary contacts. The moving contacts are guided through a bridge wherein a plurality of contact springs is positioned. The bridge connects to a moving magnet having a pa...

The present invention provides a operating mechanism (1) and a compact circuit breaker (5) wherein short circuit release (2) is placed at an angle with respect to horizontal and is optimized in a manner so that enough space is available at the top for mechanism(1) and space for divergent de-iron plates at the bottom...

Disclosed isa micro-controller based accurate sensing of earth fault in presence of harmonics and thereby tripping under actual fault condition and thus reducing the number of nuisance trips. A method (200) for earth fault detection based on a signal received, thereby tripping said electronic tripping unit of said c...

Aspects of the present disclosure provide a method for fixing a contact button on a terminal, the method includes steps of forming serrations on base metal of the terminal by making/ roughing up the surface on which the contact button has to be formed, welding of wire material on serrated area of terminal and forma...

A two or multiple pole modular MCCB assembly derivable from at least two single poles such that the said assembly rivetless requiring less number of components, said assembly comprising: a housing (l);a cover (2)means; a trip plate assembly of each single pole MCCB comprising a trip plate (4) means adapted to interl...

The various embodiments of the present invention provide a wedge type secondary isolating contacts in circuit breakers. According to one embodiment, a wedge type secondary isolating contact assembly for circuit breaker comprises a breaker side secondary isolating contact assembly provided with a jaw shaped female ty...

A locking mechanism (100) for a fuse-link (80) is disclosed. The locking mechanism (100) comprises a fuse handle/ fuse puller (60), two extended tags (40), two guide plates (30), two fuse-link tags (20) and a spring (10). The locking mechanism (100) offers advantages of compact size, reduced number of components and...

The present disclosure relates to racking assembly for withdrawable switchgear devices having a moving module that can be removably inserted into a fixed module wherein a rack is formed from sheet metal by performing one or more combinations of bending, punching and welding of sheet metal. Use of sheet metal strengt...

The present invention discloses a residual current circuit breaker device having a single flag indicator lever adapted to be operated by an engagement means. The flag indicator lever functions to indicate a tripped condition of the residual current circuit breaker device wherein a signal flag indicator assists in in...

The present invention provides a coupling mechanism for coupling plurality of electrical components. The component includes at least one arm, a hook and an aligning pin. The arm is rotatably disposed on the electrical component. The hook is configured on a distal end portion of the arm. Further, the hook enables to ...

The invention relates generally to tracking failure in test unit and more particularly to tracking failure like single phase and welding in a test unit. The system for tracking failure in test unit that through the embedded contactors and detecting element captures and provide accurate data of performance & test fai...

Disclosed herein is a pole-wise modular terminal block that comprises a slot and a joining piece. The joining piece is a flexible component and is inserted into the slot of the pole-wise terminal blocks by click fit action for connecting two or more pole-wise terminal blocks together.

Disclosed herein is an integral de-ionizer for de-ionizing arc chutes for a typical circuit breaker. The de-ionizer comprises a stack of gratings 10 having offset cross-section. Each grating 10 has same or different profile. A base cover 14 is provided on which the stack of grating 10 is mounted. The base cover 14 h...

The present invention provides protection mechanism for a removable part of switchgear and control-gear assemblies, the mechanism comprises a cam adapted on a shaft; a blocking bracket rotating about a pivot point, a cable connecting the cam with the blocking bracket wherein depending upon condition of the protectio...

The present disclosure relates to updating data in flash memory of an Electronic Trip Unit (ETU). For example, when certain data of the frame written in the data flash is to be cleared keeping rest of the data unchanged, those bytes of data are made zero in the same data flash frame. The data is saved in a frame tha...

ABSTRACT CONTACT LOCKING MECHANISM WITH AN INBUILT FEATURE TO FLIP-FLOP This invention relates generally to circuit breakers and more particularly to a contact locking mechanism with an inbuilt feature to flip-flop for circuit breakers. It comprises a rotating member; duality of contacts fitted vertically to f...

The present invention relates to an arc chute assembly having improved arc quenching. The assembly comprises plurality of material coated de-ion plates (4) each of which de-ion plates is coated with plurality of different materials having different predetermined work functions (1, 2 and 3). Each of the de-ion plates...

Disclosed herein is a universal mechanism for MCCBs that comprises a latch bracket having a first profile and a second profile. The first profile guides the latch bracket and helps in stopping its rotation during tripped condition. The second profile acts as a spring for retaining the original position of the latch ...

The present disclosure relates to a rotary cam switch carrying more than two contact points in a single stage and thus can be used for three phase applications without need for extra depth in panel. In an embodiment the disclosed switch comprises of a rotary mechanism and a contact system. The rotary mechanism is co...

Disclosed herein is an improved knob mechanism for a circuit breaker. The knob comprises a first surface positioned towards contact system of the circuit breaker, a second surface positioned towards protection release system and a fork for mounting the knob. The imaginary line passing through the first surface and t...

A fool-proofing mechanism is provided for toggling between positions of a MCC Module. The fool-proofing mechanism comprising a handle assembly to engage with a mechanism shaft of the MCC Module comprising a front segment, the front segment having a square cross-section; a middle segment, the middle segment having a ...

The present invention provides an auxiliary contact device configured for a plurality of operating conditions (on/off, trip and TAC) of an electrical device. The device comprises an insulating casing which contains fixed contacts and corresponding moving contacts, connection terminals, and a kinematic mechanism. The...

A mechanism for indicating positions of a MCC Module is provided. The mechanism for indicating positions comprises an indexing cam adapted on a mechanism shaft of the MCC Module; and an indexing lever, the indexing lever co-operable with the indexing cam to indicate a position of the MCC Module. Reference Figure 1 ...

Disclosed is a plug in adaptor configured to connect to a miniature circuit breaker. The plug in adapter comprises housing with a cover, and a fixed terminal capable of being connected to any one of top terminal and bottom terminal of the miniature circuit breaker, a copper braid connected to the fixed terminal, a m...

Disclosed is a Rogowski coil. The Rogowski coil comprises a first C shaped insulated core having at least one protrusion configured on first end and at least one cut adapted on second end. Further, the Rogowski coil comprises a second C shaped insulated core having at least one cut adapted on first end and at least ...

The present disclosure relates generally to circuit breakers, and particularly to display of circuit breaker panels. In an aspect, the present disclosure relates to a system configured to provide a display for a plurality of circuit breaker panels, wherein system comprises at least one circuit breaker that forms par...

The present disclosure relates to field of circuit breaker, and more specifically relates to a wireless current sensor for circuit breaker to sense a branch current in a branch wire serviced by an associated circuit breaker and determine the sensed currents. In an aspect, the current sensor can include one or more f...

The present disclosure provides a method of writing thermal data on a non-volatile memory to a self-powered electronic trip unit (ETU) so that total number of write operations during lifetime of the ETU does not exceed permissible numbers. The proposed method keeps track of previous memory write operations and the t...

The present invention provides a phase-lock loop (PLL) control system and method for synchronization three phase or single phase grid frequency. The phase lock control system is implemented using a field-programmable gate array (FPGA) unit to measure grid voltage signals, a transformation module to perform transform...

A rotary mechanism for switching an electrical switch is disclosed. The rotary mechanism (1) comprises of a vertical gear (2) coupled to a horizontal gear (7) that has slots provided in it. The horizontal gear (7) is in turn connected to a horizontal gear connector (8) by a pin (9)and nut (10). This pin (9) and nut ...

An enclosure (100) with door reversibility is disclosed. The enclosure (100) comprises a box (20), a door (40), a pair of hinges (60), a pair of female locking members (80), a pin (85) and an end cap (90). The pair of hinges (60) and the pair of female locking members (80) are mounted on the same mounting dimensions...

Disclosed is an interlocking mechanism (100) for switching devices. The interlocking mechanism (100) comprises a first bridge coupler (10), a second bridge coupler (20), a first housing (40), a second housing (60), a clutch cable (70), a first compression spring (80) and a second compression spring (90). The interlo...

The present disclosure pertains to a busbar support assembly that has flexibility to be configured to meet the varying requirement of number of busbars to be supported and differences in their cross section. The disclosed busbar support assembly comprises of a grip configured to hold one or more number of busbars of...

Embodiments of the present disclosure relate to a component that firmly holds busbar hoder onto support channel in a switchboard. The disclosed clip ensures firm fastening of busbar holder via friction fitting during normal as well as abnormal conditions like short circuit. Further the disclosed clip can be fitted w...

The various embodiments of the present invention provide a safety shutter assembly mechanism for modules of switchboards. The shutter assembly mechanism comprises a housing mechanism attached with the module. A cam is provided in the housing mechanism. A connecting pin is attached to the cam. A lever is coupled to t...

The present disclosure relates to a moving contact with an integrated arc runner (106) formed by cold forging the conducting material of the moving contact (102) which eliminates the requirement of an additional component required in conventional methods. In an embodiment, width of the moving contact is increased to...

The present disclosure relates to an input sensing circuit for digital input sensing, wherein the circuit comprises a first opto-isolator (iso1) configured to sense input signal; a constant current circuit configured to generate a constant current; and a digital sampling circuit comprising a second opto-isolator (is...

The present invention provides an electrical switching apparatus comprises: a load conductor (5) and a line conductor (3); at least one pair of separable contacts (8) electrically connected between the load conductor(5) and the line conductor(3); an moving conductor assembly adapted for movement between an open posi...

Abstract Disclosed is a racking mechanism (100) for a draw-out circuit breaker. The racking mechanism (100) comprises a support plate (10), a worm gear (30), a worm wheel (50), an auxiliary pinion (70) and a rack (90). The racking mechanism (100) amplifies torque and reduces transmission losses for racking the dr...

An assembly for arc quenching for a circuit breaker that senses a fault in earlier stage and quenches the arc at lower current in lesser time is provided. The assembly comprising an arc chute; and a magnet, the magnet being in the form of an enclosure, the enclosure has an enclosure portion and a slanting extended p...

In one implementation, a busbar support assembly consisting of a steel grip, a holder and pultruded support is disclosed. The holder is first inserted in a hole provided on the pultruded support where steel grip has to be assembled. While inserting the holder in the pultruded support, four legs provided on the holde...

The present invention provides an improved interlocking mechanism of molded case circuit breaker. The mechanism module comprises a master link means(1n) means fixed onto a side plate, which is driven by cam stopper (1b), anti-pumping link(1c) and trip indicator (1h). The force is transferred from an ON/OFF button to...

In one implementation, an operating mechanism for circuit breaker is disclosed. The operating mechanism comprises a fork 1, a spring pin 2, at least one spring 3, and at least one side plat 4, wherein the fork 1 is characterized in that comprising a cam profile 1a; a notch 1b at the end of the cam profile 1a; a slot...

The present invention describes a transmission-movement kinematic mechanism for auxiliary devices. The mechanism having a transmission-movement kinematic mechanism and a trip-indicator kinematic mechanism having an indicator flag. The operating connection between the mechanism and the trip-indicator kinematic mechan...

Disclosed is an under voltage release (200) for controlling the operation of a circuit breaker. An input supply (10) provides an input (20) to the under voltage release (200). The under voltage release (200) monitors healthiness of the input supply (10). The under voltage release (200) comprises a bridge rectifier (...

Disclosed is a trip indication mechanism (100) for a circuit breaker (150). The trip indication mechanism (100) comprises a trip auxiliary contact (10), a latch bracket (30), a latch link (50) and a trip plate (70). The trip indication mechanism (100) uses the trip plate (70) and a cam arrangement for direct and thu...

Abstract Disclosed are a system (100) and a method (200) for firmware up-gradation in a protection device. The system (100) comprises a web link module (10), a server (20) and a plurality of distributed control systems (30). The system (100) and the method (200) provide a very flexible way of firmware up-gradatio...

The present invention provides a system (100) and a method (200) for measurement of all sequence components (zero, positive and negative). The system comprises of a three-phase input unit (10), a signal conditioning circuit (20), an analog to digital converter (ADC) (30), a phase shifter (40), a zero sequence compon...

Disclosed is a method for optimization of input and output data transfer during profibus cyclic communication in a networked computerized industrial process control systems. The method includes connecting a relay with a computer using a communication module with configuration utility, and selecting a parameter requi...

A system and method of an overvoltage detection (ac/dc) for electrical/electronic and power electronics equipment are disclosed. In one implementation, a parallel circuit to provide a hardware protection of over voltage along with the conventional fundamental circuit to provide a software based over voltage protecti...

The present invention provides a contact resetting system in a circuit breaker wherein the resetting system comprises a reset spring arranged in such a manner so as to enable the resetting of at least a pair of contact that is repelled, opened and locked in an event of a fault eliminating the need of an accelerated ...

The present invention provides a display system (50) of a switchgear device (100) for flashing alarm indication. The display system (50) is located on the control unit (80) of the switchgear device (100) for displaying a status of the switchgear device (100) in real time. The display system (50) comprises of an alar...

Disclosed is a self powered circuit breaker (200). The self powered circuit breaker (200) comprises at least one sensor (140), a trip unit (100), a controller (80) and a trip mechanism (90). The trip unit (100) monitors the current at the instant of closing the self powered circuit breaker (200) and switches a power...

A protection relay device enabling data communication using transistor-transistor logic (TTL) circuit is disclosed. In one implementation, a power supply module from a display board is removed and the control power supply from the CPU side along with the RS485 serial communication link of shielded cable is provided ...

The protection relay device comprises a current sensing circuit adapted receive an input signal and measures a current passing through the relay device;at least one processor configured to receive the input signal, amplify the signal received, and transmit the signal amplified to at least one analog to digital conve...

The present disclosure relates to railing system of draw out type circuit breakers. The disclosure provides a rail (100) that is supported on rollers and removes sluggishness in movement, reduces effort required to move circuit breaker inward/outward and enhances service life due to reduced wear. In an embodiment, t...

The present disclosure relates to a switch having a rocker assembly comprising a rocker, a slider operatively coupled with the rocker and kept in position by means of one or more springs. The switch can further include a toggle assembly that is operatively coupled with the rocker assembly and comprises a toggle and ...

The present disclosure generally relates to the field of power management. In particular, the present disclosure relates to mechanisms for powering up of display module or other modules used in circuit breakers using auxiliary means of supply such as Battery. In an aspect, circuit breaker of the present disclosure c...

The present disclosure relates to a decoupling-coupling mechanism in a motor operator typically provided in switching devices configured to disengage motor during manual operation of the Switch Gear. In an aspect, the present disclosure provides a positive decoupling-coupling mechanism configured between motorized g...

The present disclosure relates to methods for short circuit fault current sensing and tripping through an Electronic Trip Unit (ETU) of a Circuit Breaker. In an aspect, method of the present disclosure includes the steps of receiving from an analog circuit, at a microcontroller of an electronic trip unit of a circui...

In one implementation, the system provides a fast detection, isolation and recovery of faults, wherein GOOSE messages according to IEC 61850 are transmitted over substation communication networks within substations of an electric power network, and further transmitting the message over a wireless communication link ...

The disclosure provides a retro-fittable motorized rack kit 100 for draw-out type circuit breakers for motorized “racking in” and “raking out”. The kit comprises a motor unit 102 configured to provide racking effort for racking of the cradle; an extension shaft 104 operatively coupled to the motor unit 102 and confi...

A stored energy mechanism module to regulate at least one ON/OFF operation of a MCCB. The stored energy mechanism module comprising: a side plate assembly (1 and 2) having an operating handle (1h) to drive the said stored energy mechanism module; a cam assembly (6) comprises of a cam means (6b) rotated by means of f...

The present disclosure relates generally to a self-recovery mechanism from a malfunction state in an electronic controlled device. In an aspect, the present disclosure relates to an electronic controlled device having a controller that is operatively coupled with a driver, wherein the controller can be configured to...

Disclosed is a lock assembly (200) for locking a latch (300) of a distribution board (500) using a lock (400). The lock assembly (100) is a single molded component designed specifically with a click fit arrangement for ensuring proper fitment of the lock assembly (100) with the latch (300) of the distribution board ...

Aspects of the present disclosure relate to configuration of a voltage sensing device that can include a plunger 102 with a spring 104 and a spring holder 106. The plunger 102 and the spring holder 106 can be held together with a plastic snap fit arrangement such that the spring holder 106 is free to move relative t...

The present disclosure provides a voltage sensing arrangement for an electrical switching device including an actuator mounted on a plunger that has a slot, and a latch that is operatively coupled with the actuator such that when the plunger is in picked-up condition, the latch holds the plunger through the actuator...

Abstract Disclosed is a distribution board structure (100). The distribution board structure (100) comprises a housing, a chassis, a door (60) and a plurality of connectors (80). The housing comprises a frame assembly, a top gland plate (20), a bottom gland plate, an inner door (40) and a chamber (50). The chambe...

The present disclosure relates to short-circuit protection magnetic switch of a thermo-magnetic release of molded case circuit breakers/circuit breakers The present disclosure provides a magnetic release that can be adjusted for low short circuit currents without need of reducing air gap between the moving and fixed...

The present disclosure relates to the field of circuit breakers. More particularly, the present disclosure relates to remote monitoring and status acknowledgement of circuit breakers using I2C (Inter-IC) bus. Such remote monitoring and status acknowledgement can be used for features including, but not limited to, vi...

In one implementation, an arc chute arrangement for arc quenching in electrical switching device is disclosed. The arc chute arrangement comprisesat least one splitter plate having at least one metallic plate inserted into a cap of at least one insulating plate present toward a contact gap wherein usage of a combina...

In one implementation, the present invention provides jaw comb (1), jaw finger (3), jaw assembly spring (2). Jaw assembly is fixed in the cradle assembly (8)using terminal supports (6). Jaw assembly connects air circuit breaker terminal (4) to cradle terminal (7).

The disclosure relates to an under voltage / shunt release incorporated with MCCBs. In an embodiment, the under voltage and shunt release incorporates an improved cam based actuator configured to provide adequate over travel before crossing OFF position of knob of the circuit breaker during resetting operation. This...

In one implementation, an apparatus for automated mechanical testing of at least one circuit breaker, the apparatus coupled to the circuit breaker with at least one crank handle is disclosed. The apparatus may include at least one gear mechanism with at least one optical encoder coupled to at least one direct curren...

The present disclosure generally relates to the field of screws. In particular, the present disclosure relates to a screw retainer configuration that retains a screw where it is mounted preventing the falling off of the screw after unscrewing it from counterpart. In an aspect, screw retainer of the present disclosur...

Aspects of present disclosure relate to LV switchgear devices. In an aspect, the disclosure provides a mechanism to overcome deficiencies of the conventional switchgears wherein, the switchgear can withstand the transient overshoot current and can quickly open the current carrying contacts to achieve selective co-or...

The present invention relates to a high power hybrid solid state contactor assembly for providing making and breaking of branch circuits without any production of arc in switchgear arrangements. The assembly comprises at least one high rate electromechanical contactor (1), at least one solid state device (20 which i...

The present disclosure relates to a test circuit arrangement for a circuit breaker, wherein the proposed test circuit can include a test button, a TRIAC, and a test resistor, wherein the TRIAC can be configured to protect the test resistor from continuous flow of current through it and additional protections against...

Aspects of present disclosure relate to selective tripping of circuit breakers that are connected in series and configured to trip in response to an overcurrent condition. In an embodiment the disclosed method uses time-current selectivity technique to achieve over current selectivity between the circuit breakers pl...

A nutsert crimping tool comprising a nut and a bolt having a handle at first end and a no threading part near second end of the bolt. A nutsert holding component is provided that has teeth at the bottom side to hold a nutsert in place and having a step at the bottom side for deciding the desired forming of the nutse...