73, load-resistor contactor

负荷电阻接触器。可用于电力回路中串入或旁路掉一级负荷限流电阻、分流电阻或负荷显示电阻,也可用在电路中投切加热器、照明灯以及投切电源整流器或其它电机的再生负荷电阻。

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

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