Why does the circuit breaker not operate when it is short-circuited?


1. If the type is too large, the rated current of the circuit breaker is much larger than the calculated load current of the line; the circuit breaker with appropriate specifications should be replaced;

2. The wire is too thin and does not match the selected circuit breaker; the wire laying distance is too long; the wire matching the circuit breaker should be selected; the line should be re-laid.