What are electrical circuit breakers used for?

A circuit breaker is a safety device that is put in an electrical circuit. When something fails, or shorts out, the circuit breaker "senses" the excessive current and automatically opens (or breaks) the circuit They are used in homes, as well as some electrical devices. They are different than a fuse in that a circuit breaker can be reset.

A fuse on the other hand, has to be replaced once it opens up I hope this helps you. For more info, here is a web page about circuit breakers: a href="Ciruit" rel="nofollow">wisegeek.com/what-is-a-circuit-breaker.h... breakers.

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