What is Circuit Breaker?

Basically, circuit breakers are an essential part of electrical circuits. It is a device that is used as a protective switch to pass the current that is checked for tripping condition. When it detects a trip condition, the circuit breaker opens its contact and isolates the input and output voltages from contact with each other. Hence, its basic function is to interrupt the current flow after the fault is detected. It stays open until the user resets the trip.