Circuit breakers are an electrical saftey device used in some circuits.
Like fuses, they protect the circuit from damage if too much current flows.
When circuit breakers detect a surge in current in a circuit, they break the circuit by opening a switch.
A ciruit breaker can easily be reset by flicking a switch on the device.
This makes it more convenient than fuses as they have to be replaced once they are melted.
They are a lot more expensive than a fuse though.
One type of circuit breaker is the residual current circuit breaker (RCCB)
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