当继电器动作时，一个或多个接触器动作且给断路器的脱扣线圈通电，从而将断路器断开。
When the relay operates, one or more contacts will operate and energize a trip coil in a Circuit Breaker and trip (open) the Circuit Breaker.
当继电器动作时，一个或多个接触器动作且给断路器的脱扣线圈通电，从而将断路器断开。
When the relay operates, one or more contacts will operate and energize a trip coil in a Circuit Breaker and trip (open) the Circuit Breaker.
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