Circuit Breaker



CIRCUIT BREAKER

Electrical circuit breaker is a switching device which can be operated automatically or manually for protecting and controlling of electrical power. A circuit breaker can make or break a circuit either manually or automatically under all condition as in no-load, full-load and short-circuit conditions.

It is often desirable and necessary to switch on or off the various circuits in power system. In earlier days, this function used to be performed by a switch and a fuse placed in series with the circuit. However, it presents two disadvantages.
 Firstly, when a fuse blows out, it takes quite time to replace it and restore supply to the consumer. 
Secondly, a fuse cannot successfully interrupt heavy fault currents that result from faults on high-voltage and large capacity circuits. Due to these disadvantages, the use of switches and fuses is limited to low-voltage and small capacity circuits.
This necessitates for a more dependable means of control such as is obtained by the use of circuit breakers.

It has various function

  •     To make or break a circuit either manually or by remote control under normal conditions.
  •         To break a circuit automatically under fault conditions
  •     To make a circuit either manually or by remote control under fault conditions

Types of Circuit Breaker

The different types of high voltage circuit breakers which includes the following
●      Air Circuit Breaker
●      SF6 Circuit Breaker
●      Vacuum Circuit Breaker
●      Oil Circuit Breaker

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