CJ19系列切换电容器接触器(以下简称接触器)主要用于交流50Hz(或60Hz)、额定工作电压至400V的电力线路中，供低压无功功率补偿设备投入或切除低压并联电容器之用。接触器带有抑制涌流装置，能有效地减小合闸涌流对电容的冲击和抑制开断时的过电压。

The CJ19 series switching capacitor contactors (hereinafter referred to as "contactors") are primarily used in power lines operating at 50 Hz (or 60 Hz) with a rated operating voltage up to 400 V, for the purpose of energizing or de-energizing low-voltage reactive power compensation equipment that utilizes lowvoltage

shunt capacitors. These contactors are equipped with a surge current suppression device, which can effectively reduce the impact of closing surge currents on the capacitors and suppress the overvoltages occurring during disconnection.