auxiliary controlling box
auxiliary controlling box
辅助控制箱
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Relay box is an operational device to tripping and closing of breaker instructed by protection, breaker controlling unit, monitor unit, and auxiliary device of breaker.
操作箱的作用是用来完成保护、断控单元、测控单元、断路器辅助装置对断路器跳合闸操作的装置。
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