By routing current-carrying wires through opening of sensor, UL 1053-Class 1 Series CR7310 monitors ground fault in single/multiple phase electrical systems, from 100 Aac down to 10 mAac. When ground current reaches level set by trip-point adjustment, electromechanical relay is energized, illuminating LED and providing output signal. Supply voltage is 120 or 240 Vac.
