42, running circuit breaker

运行断路器,其主要功能是在运行或操作电压下将一台电机与其电源接通,亦可用作接触器,将它与断路器或其它保护装置串接使用,主要用于频繁开、合操作的断路器。

English-Chinese electricity dictionary (电气专业词典). 2013.

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