Description:AN ARRANGEMENT TO INTERCONNECT A PLURALITY OF CIRCUIT BREAKERS OF DIFFERENT CONFIGURATION
FIELD OF INVENTION
(001) The present disclosure relates to a trip mechanism that activates upon detecting residual current, causing the circuit breaker to open. The invention specifically relates to a new linkage mechanism to interconnect circuit breakers of different configurations.
BACKGROUND
(002) The trip mechanism operates on a Permanent Magnet Release (PMR) and trips does not require a contact system. Instead of breaking the circuit directly, this mechanism provides a mechanical output to a corresponding MCR (Motor Control Relay) to open the circuit.
(003) The trip mechanism consists of a PMR, which requires an external force to reset after it has been tripped. Therefore, the mechanism must be capable of delivering the necessary force to reset the plunger of the PMR.
(004) Additionally, this mechanism is responsible for activating a test circuit and ensuring that the test circuit only functions when the mechanism is turned on. Unlike other competitors who employ different linkage mechanisms, the inventor of this mechanism has developed a unique approach to accomplish these tasks.
(005) The current ADDON RCBO designs that combine offset and centered knob configurations for MCB and RCCB integration. However, a notable absence exists in the realm of designs that successfully merge an existing centered knob MCB with an existing offset knob RCCB.
(006) In our particular case, integrating our current MCB mechanism with the RCCB proved unviable due to the inherent disparity in knob designs. The MCB employs a centered knob, while the RCCB is designed with an offset knob.
(007) To overcome this challenge and realize an ADDON RCBO solution, two potential approaches arise. One option entails redesigning the MCB to incorporate an offset knob, subsequently establishing a compatible linkage with the RCCB. Alternatively, the RCCB could undergo a redesign to feature a centered knob, accompanied by the creation of an appropriate linkage mechanism to connect the MCB and RCCB.
(008) By pursuing either of these redesign paths, it becomes possible to develop an ADDON RCBO that effectively amalgamates the strengths of both mechanisms. This ensures the seamless integration of centered knob MCBs and offset knob RCCBs within a singular, integrated device.
(009) The existing prior fails to address the specific combination of a Centered Knob MCB and an Off-Centered Knob RCCB in a single device. Due to this limitation the users are left with the inconvenience of having to install separate devices for overload and residual current protection, leading to increased complexity, additional wiring, and potential compatibility issues. The lack of prior art in this area highlights the need for an improved and more efficient solution like the Add-on RCBO device.
(010) The current ADDON RCBO design options include both centered knob MCBs and offset knob RCCBs. However, there is a lack of a design that combines an existing centered knob MCB with an existing offset knob RCCB. To address this limitation, two possible approaches are proposed: redesigning the MCB with an offset knob and establishing a linkage between the MCB and RCCB, or redesigning the RCCB with a centered knob and creating a linkage between the MCB and RCCB. By implementing one of these options, it becomes feasible to develop an ADDON RCBO that integrates the benefits of both mechanisms, providing an effective and versatile solution for circuit protection. Thus there is a pressing need to achieve the same.
OBJECTS OF THE INVENTION
(011) Some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed herein below.
(012) It is an object of the present subject matter to overcome the aforementioned and other drawbacks existing in the prior art systems and methods.
(013) It is a principal object of the present subject matter to provide a versatile RCBO linking mechanism that works with both Centered Knob MCB and Off-centered Knob RCCB.
(014) It is another significant object of the present subject matter to propose the RCBO linking mechanism that ensure optimal electrical safety by incorporating reliable protection features.
(015) It is another significant object of the present subject matter to propose the RCBO linking mechanism to seamlessly integrate with these systems to facilitate easy upgrades and replacements without the need for extensive modifications.
(016) It is an object of the present subject matter to propose the RCBO linking mechanism with a unified option that can be universally applied, reducing overall production costs and providing increased value to customers.
(017) These and other objects and advantages of the present subject matter will be apparent to a person skilled in the art after consideration of the following detailed description taking into consideration with accompanied drawings in which preferred embodiments of the present subject matter are illustrated.
SUMMARY OF THE INVENTION
(018) This summary is provided to introduce concepts related to the ADDON module RCBO, that is, combining MCB and RCCB mechanism. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
(019) The present invention discloses an arrangement to interconnect a plurality of circuit breakers of different configuration. The arrangement comprises of a first circuit breaker, with a centered mechanism that is configured for detecting short circuit and overload in electrical system. A second circuit breaker with an off- centered knob configuration connected to the first circuit breaker to provide protection against the earth leakage current. A coupling link is configured for coupling the first circuit breaker and the second circuit breaker. The coupling link being fit into a T slot of the second circuit breaker. A flat headed pin is provided above the knob mechanism of the second circuit breaker configured for holding the coupling link pin in the second circuit breaker. A MCB toggle connects the first circuit breaker to the second circuit breaker.
(020) In one aspect the first circuit breaker is Miniature Circuit breaker(MCB).
(021) In another aspect the second circuit breaker is Residual Current Circuit breaker(RCCB).
(022) In one aspect the coupling link comprises a first end that is fit into the trip bar of the first circuit breaker and a second end that is held by the flat headed pin in the second circuit breaker.
(023) In another aspect a MCB toggle connects the first circuit breaker to the second circuit breaker.
(024) In one aspect the MCB toggle is adapted for allowing the first circuit breaker to be ON only when the second circuit breaker is ON.
(025) In another aspect the off-centered mechanism prevents the first circuit breaker from being turned on if the second circuit breaker in OFF condition and first circuit breaker in the OFF condition.
(026) In one aspect the arrangement enables the first circuit breaker to be turned on by rotating the knob provided in the first circuit breaker in OFF condition and second circuit breaker in ON condition.
(027) In another aspect the arrangement trips both the first circuit breaker and the second circuit breaker when the second circuit breaker trips in the second cir-cuit breaker in ON and first circuit breaker in ON condition.
(028) In another aspect, a method for interconnecting a first circuit breaker with a centered knob configuration and a second circuit breaker with an off-centered knob configuration to protect electrical systems from earth leakage current and overload comprises of connecting the first circuit breaker to the second circuit breaker using the coupling link and MCB Toggle This is followed by turning ON the second circuit breaker, which allows the first circuit breaker to be turned ON. The system is monitored for earth leakage current, short circuit and overload. The first circuit breaker trips using the offset mechanism of the second circuit breaker to protect the system from damage if earth leakage current is detected.
(029) To further understand the characteristics and technical contents of the present subject matter, a description relating thereto will be made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit the scope of the present subject matter.
(030) Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
(031) It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the invention may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. In the figures, a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system or methods or structure in accordance with embodiments of the present subject matter are now described, by way of example, and with reference to the accompanying figures, in which
(032) Fig. 1 illustrates a front view of the arrangement to interconnect a plurality of circuit breakers of different configuration in accordance with an embodiment of the present disclosure;
(033) Fig. 2 illustrates an intersectional view of the arrangement to interconnect a plurality of circuit breakers of different configuration of the first circuit breaker in OFF Condition in accordance with an embodiment of the present disclosure;
(034) Fig. 3 illustrates an intersectional view of the arrangement to interconnect a plurality of circuit breakers of different configuration of the first circuit breaker in ON Condition in accordance with an embodiment of the present disclosure;
(035) Fig. 4 illustrates a side view of the existing arrangement to interconnect a plurality of circuit breakers of different configuration with flatheaded pin connected with second circuit breaker in accordance with an embodiment of the present disclosure;
(036) Fig. 5 illustrates a side view of the arrangement to interconnect a plurality of circuit breakers of different configuration with fitted coupling link connected with second circuit breaker in accordance with an embodiment of the present disclosure;
(037) Fig. 6 illustrates an intersectional view of the arrangement to interconnect a plurality of circuit breakers of different configuration of the first circuit breaker and second circuit breaker in OFF Condition in accordance with an embodiment of the present disclosure;
(038) Fig. 7 illustrates an intersectional view of the arrangement to interconnect a plurality of circuit breakers of different configuration of the first circuit breaker is in OFF Condition and the second circuit breaker in ON Condition in accordance with an embodiment of the present disclosure;
(039) Fig.8 illustrates a sectional view of the arrangement to interconnect a plurality of circuit breakers of different configuration of the first circuit breaker and second circuit breaker in ON Condition in accordance with an embodiment of the present disclosure;
(040) The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION
(041) A few aspects of the present disclosure are explained in detail below with reference to the various figures. Example implementations are described to illustrate the disclosed subject matter, not to limit its scope, which is defined by the claims. Those of ordinary skill in the art will recognize a number of equivalent variations of the various features provided in the description that follows.
(042) As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
(043) Each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the "invention" may in some cases refer to certain specific embodiments only. In other cases, it will be recognized that references to the “invention" will refer to subject matter recited in one or more, but not necessarily all, of the claims.
(044) Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.
(045) Various embodiments are further described herein with reference to the accompanying figures. It should be noted that the description and figures relate to exemplary embodiments and should not be construed as a limitation to the subject matter of the present disclosure. It is also to be understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the subject matter of the present disclosure. Moreover, all statements herein reciting principles, aspects, and embodiments of the subject matter of the present disclosure, as well as specific examples, are intended to encompass equivalents thereof. Yet further, for the sake of brevity, operation or working principles pertaining to the technical material that is known in the technical field of the present disclosure have not been described in detail so as not to unnecessarily obscure the present disclosure.
(046) Fig. 1 illustrates a front view of the arrangement to interconnect a plurality of circuit breakers of different configuration in accordance with an embodiment of the present disclosure. The present invention discloses an arrangement (100) to interconnect a plurality of circuit breakers of different configuration. The arrangement (100) comprises of a first circuit breaker (102), with a centered mechanism that is configured for detecting short circuit and overload in electrical system. A second circuit breaker (110), with an off- centered knob configuration connected to the first circuit breaker (102) to provide protection against the earth leakage current. A coupling link (108) is configured for coupling the first circuit breaker (102) and the second circuit breaker (110). The coupling link (108) being fit into a T slot of the second circuit breaker (110). A flat headed pin (112) is provided above the knob mechanism of the second circuit breaker (110) configured for holding the coupling link (108) pin in the second circuit breaker (110). An MCB toggle (104) connects the first circuit breaker (102) to the second circuit breaker (110).
(047) Further, in the present embodiment the first circuit breaker (102) is Miniature Circuit breaker(MCB). When an excessive current or a short circuit occurs, the first circuit breaker (102) automatically trips to interrupt the flow of electricity, thereby preventing damage to the electrical system and minimizing the risk of fire or electrical hazards.
(048) Furthermore, the second circuit breaker (110) is Residual Current Circuit breaker(RCCB). The second circuit breaker (110) continuously monitors the flow of current between the live and neutral conductors. The second circuit breaker (110) is capable of detecting even small imbalances in current, such as those caused by electrical leakage through a person or faulty insulation. When such a fault is detected, indicating an imbalance in the currents, the second circuit breaker (110) automatically trips and interrupts the circuit, preventing electric shocks and potential electrical hazards.
(049) The off-centered mechanism prevents the first circuit breaker (102) from being turned on in the first circuit breaker (102) in OFF condition and second cir-cuit breaker (110) in the OFF condition.

(050) The coupling link (108) comprises a first end that is fit into the MCB toggle (104), that may be interchangeably referred as the trip bar (104), of the first circuit breaker (102) and a second end that is held by the flat headed pin (112) in the second circuit breaker (110). The coupling link (108) itself has a pin or protrusion that fits into the second end of the link. This pin is held firmly by the flat-headed pin (112) in the second circuit breaker, ensuring that the coupling link remains securely attached to the circuit breaker assembly.
(051) The MCB toggle (104) connects the first circuit breaker (102) to the second circuit breaker (110). The MCB toggle (104) is adapted for allowing the first circuit breaker (102) to be ON only when the second circuit breaker (110) is ON.
(052) The arrangement (100) enables the first circuit breaker (102) to be turned on by rotating the knob provided in the first circuit breaker (102) in OFF condi-tion and the second circuit breaker (110) in ON condition.
(053) Fig. 2 illustrates an intersectional view of the arrangement to interconnect a plurality of circuit breakers of different configuration of the first circuit breaker in OFF Condition in accordance with an embodiment of the present disclosure.
(054) Fig. 3 illustrates an intersectional view of the arrangement to interconnect a plurality of circuit breakers of different configuration of the first circuit breaker in ON Condition in accordance with an embodiment of the present disclosure;
(055) Fig. 4 illustrates a side view of the existing arrangement to interconnect a plurality of circuit breakers of different configuration with flatheaded pin connected with second circuit breaker in accordance with an embodiment of the present disclosure. The flat headed pin (112) is provided above the knob mechanism of the second circuit breaker (110) for holding the coupling link (108) pin in the second circuit breaker (110). To ensure that the coupling link (108) remains firmly attached to the second circuit breaker (110), the flat-headed pin (112) is provided. The pin (112) is positioned above the knob mechanism, and its flat head serves as a retaining element for the pin of the coupling link (108). It effectively holds the coupling link (108) in place within the second circuit breaker (110).
(056) Fig. 5 illustrates a side view of the arrangement to interconnect a plurality of circuit breakers of different configuration with fitted coupling link connected with second circuit breaker in accordance with an embodiment of the present disclosure. By inserting the coupling link (108) into the T slot of the second circuit breaker (110), a mechanical connection is established between the second circuit breaker (110) and the first circuit breaker (102). This connection ensures that when the first circuit breaker (102) trips due to an electrical fault, it triggers the second circuit breaker (110) to trip as well, interrupting the electrical circuit. The linking mechanism (100) will allow the first circuit breaker (102) to be ON only when the second circuit breaker (110) is ON. If there is any leakage, the second circuit breaker (110) will trip the first circuit breaker (102) to protect the system.
(057) The first circuit breaker (102) trips in short-circuit and overvoltage conditions; and in such cases, the first circuit breaker (102) does not trip the second circuit breaker (110). The second circuit breaker (110) will remain ON to protect the system from any leakage current.
(058) Fig. 6 illustrates an intersectional view of the arrangement to interconnect a plurality of circuit breakers of different configuration of the first circuit breaker and second circuit breaker in OFF Condition in accordance with an embodiment of the present disclosure. In this condition first circuit breaker (102) should not be Switched ON without Switching ON second circuit breaker (110). The coupling link (108) has been designed in a way that, in the "OFF" condition, it comes into contact with the existing "Reset Link"(118) of the second circuit breaker (110). This arrangement serves a purpose: when someone attempts to switch "ON" the first circuit breaker (102), the presence of the Reset Link (118) prevents the cou-pling link (108) and its connected trip bar (104) from rotating. As a result, the movement to switch on the first circuit breaker (102) is restricted or prevented.
(059) Fig. 7 illustrates an intersectional view of the arrangement to interconnect a plurality of circuit breakers of different configuration of the second circuit breaker in ON Condition in accordance with an embodiment of the present disclo-sure. The arrangement (100) trips both the first circuit breaker (102) and the sec-ond circuit breaker (110) when the second circuit breaker (102) trips in the second circuit breaker (110) in on and first circuit breaker (102) in ON condition.
(060) Fig.8 illustrates a sectional view of the arrangement to interconnect a plurality of circuit breakers of different configuration of the first circuit breaker and second circuit breaker in OFF Condition in accordance with an embodiment of the present disclosure. The arrangement (100) works in two different conditions
• Case 1: When the first circuit breaker (102) trips: In this Condition the first circuit breaker (102) can be Tripped While Detecting Overload or Short Circuit Fault without Any Hassle since Coupling Link Can Move Upward Freely. The second circuit breaker (110) remains ON.
• Case 2: When the second circuit breaker (110) trips: In this Condition second circuit breaker (110) can be Tripped on Fault freely & Due to Tripping movement reset Link (118) Will Push the Coupling Link upward which will Trip the MCB Also. The first circuit breaker (102) may remain OFF or ON.
WORKING OF THE EMBODIEMENT
(061) A method for interconnecting a first circuit breaker (102) with a centered knob configuration and a second circuit breaker (110) with an off-centered knob configuration to protect electrical systems from earth leakage current and overload comprises of connecting the first circuit breaker (102) to the second circuit breaker (110) using the coupling link (108) and flat headed pin (112). This is followed by turning ON the second circuit breaker (110), which allows the first circuit breaker (102) to be turned ON. The system is monitored for earth leakage current, short circuit and overload. The second circuit breaker (110) trips using the centered mechanism of the first circuit breaker (102) to protect the system from damage if earth leakage current is detected.

ADVANTAGES
(062) The proposed linking mechanism aims to deliver the following advantages:
• Works with both Centered Knob MCB and Off-centered Knob RCCB, offering flexibility in product selection and installation.
• Simplifies the process by eliminating the need for separate mechanisms and reducing complexity.
• Provides reliable protection against residual current and overcurrent conditions, ensuring optimal safety for electrical circuits and devices.
• Eliminates the need for developing and maintaining separate product ranges, reducing production costs.
• Enables seamless integration with existing electrical infrastructures, facilitating hassle-free upgrades and replacements.
(063) The above description does not provide specific details of the manufacture or design of the various components. Those of skill in the art are familiar with such details, and unless departures from those techniques are set out, techniques, known, related art or later developed designs and materials should be employed. Those in the art are capable of choosing suitable manufacturing and design details.
(064) Further, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. It will be appreciated that several of the above-disclosed and other features and functions, or alternatives thereof, may be combined into other systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may subsequently be made by those skilled in the art without departing from the scope of the present disclosure as encompassed by the following claims.
(065) The claims, as originally presented and as they may be amended, encompass variations, alternatives, modifications, improvements, equivalents, and substantial equivalents of the embodiments and teachings disclosed herein, including those that are presently unforeseen or unappreciated, and that, for example, may arise from applicants/patentees and others.
(066) It will be appreciated that variants of the above-disclosed and other features and functions, or alternatives thereof, may be combined into many other different systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may be subsequently made by those skilled in the art which are also intended to be encompassed by the following claims.
, Claims:We Claim

1. An arrangement (100) to interconnect a plurality of circuit breakers of dif-ferent configuration, the arrangement (100) comprising:
a first circuit breaker (102), with a centered mechanism, configured for detecting short circuit and overload in electrical system;
a second circuit breaker (110), with an off- centered knob configura-tion, to provide protection against the earth leakage current;
a coupling link (108), configured for coupling the first circuit breaker (102) and the second circuit breaker (110), wherein the coupling link (108) being fit into a T slot of the second circuit breaker (110); and
a flat headed pin (112), provided above the knob mechanism of the second circuit breaker (110) configured for holding the coupling link (108) pin in the second circuit breaker (110).
2. The arrangement (100) as claimed in claim 1, wherein the first circuit breaker (102) is Miniature Circuit breaker(MCB).

3. The arrangement (100) as claimed in claim 1, wherein the second circuit breaker (110) is Residual Current Circuit breaker(RCCB).

4. The arrangement (100) as claimed in claim 1, wherein the coupling link (108) comprises a first end that is fit into a trip bar (104) of the first circuit breaker (102) and a second end that is held by the flat headed pin (112) in the second circuit breaker (110).

5. The arrangement (100) as claimed in claim 1, wherein an MCB toggle (104) connects the first circuit breaker (102) to the second circuit breaker (110).
6. The arrangement (100) as claimed in claim 1, wherein the MCB toggle (104) is adapted for allowing the second circuit breaker (110) to be ON on-ly when the first circuit breaker (102) is ON.

7. The arrangement (100) as claimed in claim 1, wherein the off-centered mechanism prevents the first circuit breaker (102) from being turned on in the first circuit breaker (102) in OFF condition and second circuit breaker (110) in the OFF condition.

8. The arrangement (100) as claimed in claim 1, wherein the arrangement (100) enables the first circuit breaker (102) to be turned on by rotating the knob provided in the first circuit breaker (102) in OFF condition and the second circuit breaker (110) in ON condition.

9. The arrangement (100) as claimed in claim 1, wherein the arrangement (100) trips both the first circuit breaker (102) and the second circuit break-er (110) when the second circuit breaker (110) trips in the second circuit breaker (110) in ON and first circuit breaker (102) in ON condition.

10. A method for interconnecting a first circuit breaker (102) with a centered knob configuration and a second circuit breaker (110) with an off-centered knob configuration to protect electrical systems from earth leakage current and overload, the method comprising:
Connecting the first circuit breaker (102) to the second circuit breaker (110) using the coupling link (108) and flat headed pin (112);
Turning ON the second circuit breaker (110), which allows the first circuit breaker (102) to be turned ON;
Monitoring the system for earth leakage current, short circuit and overload; and
Tripping the first circuit breaker (102) using the offcentered mech-anism of the second circuit breaker (110) to protect the system from damage if earth leakage current is detected.