Simple Description

A device that switches off a circuit if there is too much current.

Further Detail

Circuit breakers are safety devices that switch off when there is too much current. They have a number of advantages over a fuse (which also switches off a circuit when there is too much current). For example, they can be easily reset, they don't get hot and they don't need to be replaced like fuses do.

Related Words:

• Fuse
• AC
• Mains electricity
• Current

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