The CRKCS series reactive power compensation regulator is an electronic power device module that can quickly switch power parallel capacitors. Its electrical structure mainly consists of high-power anti parallel thyristor modules, isolation circuits, trigger circuits, synchronous circuit protection circuits, and drive circuits, and is equipped with wiring terminals for controlling switch conduction or cutoff, and controlling logic voltages OV (cutoff) and 12V (conduction). This switch has the characteristics of simple installation, easy maintenance, fast response speed, no surge current during switching, stable and reliable operation without noise, and phase loss protection. It is also embedded firmly and reliably, and reasonably saves cabinet space. The internal design comes with a temperature control cooling fan start stop device and temperature protection device.