JCZ5 series indoor AC high voltage vacuum contactors are designed for three-phase AC systems, 50Hz, with rated voltages of 7.2kV, 10kV, and 12kV or below, and a maximum rated current up to 630A. These vacuum contactors are widely used in medium and high voltage power distribution networks for reliable switching, frequent control, and protection of high voltage electrical equipment. With stable performance, long service life, and strong breaking capability, the JCZ5 series is an ideal choice for applications requiring safe and efficient operation of motors, transformers, and other high voltage loads.