What's a circuit breaker?

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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.

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