RGC7三相交流接触器适用于铁路电力机车起动电阻、劈相机、压缩机电动机、牵引通风机电动机、制动通风机电动机、主变压器油泵电动机、主变压器通风机电动机等电路的接通和关断。

该接触器技术先进，电磁驱动，结构紧凑，安全可靠，使用寿命长，少维护、免维修。

该接触器带有过电压抑制器，其线圈不会在110V控制回路中产生反电势，因此，控制回路不需加装其它过电压抑制装置。该接触器具有优越的磁吹灭弧性能，只有在接触器分断拉弧时灭弧线圈才导通，在正常工作状态下，灭弧线圈不导电，大大降低了电耗和发热。

RGC7 three-phase AC contactor is applicable to railway locomotive starting resistance, phase splitter, compressor motor, traction fan motor, brake fan motor, the main transformer oil pump motor, the main transformer fan motor circuits, etc.

With advanced technology and electromagnetic drives, the contactor is safe and reliable with compact structure, long life, low maintenance, and repairing-free. As the contactor, with the over-voltage suppressors, the coil of which will not produce back EMF in 110V control loop, there is no need to add other over-voltage suppression devices in the control loop. The contactor has excellent performance of magnetic quenching. The blowout coil is conductive only when the contactor breaks arcing and is not conductive in normal working condition, therefore, heat and power consumption can be greatly reduced.