Why do circuit breakers trip?

Circuit breakers are crucial safety devices designed to automatically interrupt the flow of electricity in a circuit when they detect an overload or a short circuit. This plays a vital role in protecting electrical systems, such as those found on ships, from potential damage caused by excess current. When circuits experience excessive current, heat builds up, which can result in damaged wiring, equipment failures, and even fire hazards. By tripping, the circuit breaker effectively isolates the faulty section of the system, preventing further damage and ensuring the safety of both personnel and equipment.

While saving energy, allowing for maintenance, and adhering to regulatory standards are important considerations in electrical systems, the primary purpose of circuit breakers is fundamentally centered on protection against electrical faults and preventing damage.