ABB CM-MPN.72P Three-phase monitoring relay 2c/o, 0,0.1-30s, L1-L2-L3=3x530-820VAC 1SVR760489R8300The CM MPN. 72P is a multifunctional relay from the CM three phase monitors range. It operates with a rated control supply voltage three phase measuring voltage of 530 820 V AC 50 60 Hz and has a 2 c o (SPDT) output with contacts rated at 250 V 4 A. This relay monitors all phase parameters such as over undervoltage, phase unbalance and phase failure. The corresponding threshold values are adjustable. The CM MPN. 72P also offers selection of phase