What Is Called Circuit Breaker

A circuit breaker is an electrical switch designed to protect an electrical circuit from damage caused by overcurrent/overload or short circuit. Its basic function is to interrupt current flow after protective relays detect a fault.

What is circuit breaker and types?

There are three basic circuit breaker varieties: standard breakers (which include both single-pole and double-pole circuit breakers), ground fault circuit interrupter circuit breakers (GFCIs) and arc fault circuit interrupter circuit breakers (AFCIs).

What is ACB and VCB?

ACB Stands for Air Circuit Breaker where as VCB stands for Vaccum Circuit Breaker. ACB is used for the voltage level upto 440V, whereas VCB is used beyond the 440V. Both circuit breakers differ from each other only in terms of arc quenching medium they are using.