ABB CM-PAS.31S Three-phase monitoring relay 2c/o, 0,0.1-30s, L1-L2-L3=3x160-300VAC 1SVR730774R1300The CM PAS. 31S relay is from the CM three phase monitors range. This relay operates with a rated control supply voltage three phase measuring voltage of 160 300 V AC and has a 2 c o output with contacts rated at 250 V 4 A. The CM PAS. 31S monitors the phase parameters phase failure, phase sequence and phase unbalance. An ON delay is adjustable over a range of instantaneous to 30 s (0, 0. 1 30 s). A sealable transparent cover for protection against