The operation procedures to move the withdrawable circuit breaker in and out of the compartment are as same as that for withdrawable circuit breaker without earthing switch.

手车推入柜内或手车从柜内退出的操作程序与无接地开关之断路器的操作是完全相同的，固不再繁述。

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Main breaker a main breaker is a circuit breaker at the input or output of the bus, through which all of the bus power must flow.

主开关主开关是在母排输入或输出端的线路断路器，所有的电流都要从那通过。

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Air circuit breaker An air circuit breaker automatically interrupts the current flowing through it when the current exceeds the trip rating of the breaker.

空气线路断路器空气线路断路器的功能是当电流大小超过断路器的过流跳脱设定值后自动断开。

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In a vacuum, a conventional circuit breaker -- which measures heat across a load -- doesn't work, because there, there's less or no atmosphere there to draw the heat off, so a conventional circuit breaker would trip.

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An investigation found that part of the generator's circuit breaker had been put together backward.

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