A circuit breaker is a safety device designed to protect an electrical circuit from damage caused by an overload or short circuit. A circuit breaker works by interrupting the flow of electricity in the circuit when it detects a fault, and it can be reset once the fault has been corrected.
Circuit breakers are an essential part of any electrical system, and they can help to prevent fires and other hazards. If you suspect that a circuit breaker in your home or business is bad, it is important to have it checked by a qualified electrician as soon as possible.