under-voltage circuit breaker
... under voltage 电压不足; 欠压 under-voltage circuit breaker 低电压断路器; 欠压断路器 under-voltage no-close release 低电压不闭合释放装置 ...
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欠压无闭合断路器 under-voltage noclose release
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智能型断路器的欠压脱扣、分励脱扣、辅助触头等内部附件，如表b 1所示。
Internal Accessories of the s (h) Z Intelligent Type Breaker, such as Under voltage trip, Shunt trip, Auxiliary contacts and Alarming contacts etc.
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