Automatic Power Factor Control (APFC) panels are the ideal solution for Reactive Power Management in industries to improve the power factor and reduce the electricity bills. However, switching of capacitor banks is a challenging task in the APFC panels because of the high inrush current and voltage transients initiated by capacitors at the time of switching. The selection of an appropriate switching device is, therefore, vital and depends on the ability to carry rated capacitor current continuously while withstanding the peak inrush current of the capacitor.

Thyristor Switching Module (TSM) series is a line of electronically controlled thyristor switch for Dynamic Power factor correction. The TSM series offers fast electronically controlled, self-observing thyristor switches for capacitive loads up to 50 kVAr that are capable to switch PFC capacitors within a few milliseconds nearly without a limitation to the number of switching during the capacitor lifetime. These switching modules are easy to install, have a fast reaction time of 5 msec and come with built-in indications of operations, faults and activation.