CJ19 series capacitor changeover contactor (hereinafter referred to as the contactor) is mainly used in the electric power circuits with the frequency of AC 50Hz (or 60Hz) and the rated working voltage of up to 400V for putting the low-voltage reactive power compensation equipment into operation or cutting off the low-voltage shunt capacitors.The contactor is equipped with the inrush current suppression device, which can effectively reduce the impact of the closing inrush current on capacitors and suppress the over voltage during breaking.