What is a circuit breaker?

A circuit breaker is a safety device that interrupts the flow of current in an electrical circuit when it detects an overload or a fault condition. This interruption prevents potential hazards such as overheating, electrical fires, or damage to connected equipment. Unlike a fuse, which must be replaced after it has blown, a circuit breaker can be reset after it has tripped, making it a more convenient and reusable safety mechanism in electrical systems. Circuit breakers serve to protect both people and property by ensuring that excessive current does not flow through the circuit, automatically cutting off the electricity to prevent accidents.