A circuit breaker is an automatic protection device in the fusebox (consumer unit) that switches off a circuit if it detects a fault
Answered by Dave, Electrical Safety Expert
A circuit breaker is an automatic protection device in the fusebox (consumer unit) that switches off a circuit if it detects a fault. They are similar in size to fuses, but give more precise protection. If they trip regularly you should get a registered electrician to check your wiring.