The present invention relates to a system for saving energy in street lighting. More particularly the present invention relates to a transformer setup that can be implemented during normal and tap changing conditions to avoid transformer burnout. Advantageously the present invention brings about a design for voltage...

In a snap action rotary switch, incorporating a novel locking and indexing means motion of the switch selector means (knob, handle or others) is transmitted to the contacts through a drive and a driven wheel rotatably coupled together by spring means, the rotation of the latter being prevented upto the release poin...

The present invention relates to Base Transceiver Station (BTS) of the telecommunication towers. More particularly, the present invention relates to a BTS fan shut Air conditioner (AC) system for controlling temperature of BTS shelter with minimal cost. The invention controls the internal temperature of the shelter...

The present invention relates to the rotary switches in particular integral cam operated rotary switches wherein the circuits are activated in one or more switch positions (settings) and wherein a programmed activation of said load circuits are provided. Specifically, the present invention provides for rotary switch...

The present invention relates to a track feed battery charger changeover system, more specifically, relates to a microcontroller based track feed battery charger changeover circuit to provide safe and reliable breaking of DC battery current using AC relays. The system of the present invention connects automatically ...

The present invention relates to a fuse automatic changeover system, more specifically, relates to a system for automatic changeover to bypass circuit to restore fuse blown control circuit. The bypass circuit is provided with the fuse for short circuit protection. The invention discloses a fuse automatic changeover ...

The present invention relates to a power source changeover contactor. More particularly, the present invention relates to an automatic source changeover contactor with current limiter, which can make / break full load current without contact heating / welding. The invention provides enhanced pre determined air gab b...

The invention discloses a Motor Protection Circuit Breaker (MPCB) used for protecting a motor by interrupting power supply to the motor upon generation of a fault current in a section for starting or stopping the motor, such as power failure, short circuit and deficiency in phase by opening of the contacts. The Moto...

The present invention relates to contactor device which is used in electrical applications to switch on/off a load having a housing of modular construction. The modular housing for an electrical contactor (EC) according to the present invention comprising a first wall (1), a second wall (2) and intermediate wall (s)...

A ONE stage TWO pole disconnecting and earthing device for high voltage electrical applications comprises a switch housing (101) having a cam shaft (114) mounted with cam (102,102’), cam followers (103,104,105,106) fitted with moving contacts (103a,103b,104a,104b,105a,105b,106a,106b) are in contact with the cam (102...