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Circuit breaker

en.wikipedia.org · 5,399 words · saved by 1 readers

A circuit breaker is an electrical safety device designed to protect an electrical circuit from damage caused by current in excess of that which the equipment can safely carry (overcurrent). Its basic function is to interrupt current flow to protect equipment and to prevent fire. Unlike a fuse, which interrupts once and then must be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation.

Circuit breaker A two-pole miniature circuit breaker Electronic symbol An air circuit breaker for low-voltage (less than 1,000 volt) power distribution switchgear Four one-pole miniature circuit breakers A circuit breaker is an electrical safety device designed to protect an electrical circuit from damage caused by current in excess of that which the equipment can safely carry (overcurrent). Its basic function is to interrupt current flow to protect equipment and to prevent fire. Unlike a fuse, which interrupts once and then must be replaced, a circuit breaker can be reset (either…

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