Circuit breaker

Updated: 04/26/2017 by Computer Hope

A circuit breaker is a hardware device that activates when the current drawn from the power exceeds a set level. Its purpose is to prevent damage to electrically powered equipment in the event of a power surge or electrical malfunction. With a house circuit breaker, if the breaker trips a switch is turned to the off position and prevents any power from flowing over the circuit until it is flipped back to the on position.

Circuit, Power terms