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A circuit breaker is a protective device that automatically interrupts the current flowing through it when that current exceeds a certain value for a specified period of time.

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行业/领域：电气设备
类别发电机
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kolo

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A circuit is a path for an electric current across a potential (voltage).

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A device which changes electrical energy from one form to another, such as from alternating current to direct current.

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Any frequency within the electromagnetic spectrum associated with radio wave propagation.

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Reactance is the opposition to the flow of current in AC circuits caused by inductances and capacitances. It is expressed in terms of ohms and its symbol is X.