XFK series of dynamic non-contact switch is a shunt capacitor capable of fast power electronic switching type power device module, the electrical structure is dominated by high-power anti-parallel thyristor module, isolation circuit, trigger circuit, synchronization circuit protection circuit and driving circuit, and with a control switch is turned on or off terminals, logic control voltage OV (off), 12V (turned on). The switch has a simple installation, easy maintenance, fast response, no switching inrush current, work without noise, stable and reliable operation, lack of protection and so on. It is the dynamic reactive power compensation device ideal capacitor switching device.