How is circuit breaker works?

            How is circuit breaker works?
 The circuit breaker acts as a safety device in the same way
as a fuse. Circuit breakers that are used at the distribution
board in houses are called MCBs miniature circuit breakers.
The distribution board is also called the consumer unit.
The MCBs is disconnect the supply if too large a current flows.
After the fault is repaired, the contacts can be
pushed back together by
lifting is a switch on the outside of the circuit breaker.