Mini Circuit Breaker, Help to Detect a Fault Condition

A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short-circuit
Its basic function is to detect a fault condition and, by interrupting continuity, to immediately discontinue electrical flow
Unlike a fuse, which operates once and then has to be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation
Circuit breakers are made in varying sizes, from small devices that protect an individual household appliance up to large switchgear designed to protect high voltage circuits feeding an entire city