... auxiliary contact 辅助触点，副触点，连锁触点；辅助接点 auxiliary control coil 辅助控制线圈 auxiliary controller 辅助控制器 ...
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Means need 25a contactor, main contact are three normally open, auxiliary contact is one normally open, control coil voltage is DC 110v, order volume is 20 sets.
表示为25a接触器的主触头为三对常开，辅助触头为一对常开，控制线圈的电压为直流110v，订货数量为20台。
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