ABB CM-EFS.2P Voltage monitoring relay 2c/o, B-C=3-600VRMS, 24-240VAC/DC 1SVR740750R0400The CM EFS. 2P is a single functional voltage monitoring relay from the CM single phase monitors range. This monitoring relay operates with a rated control supply voltage of 24 240 V AC DC and has a 2 c o (SPDT) output with contacts rated at 250 V 4 A. It provides a RMS measuring principle for DC and AC voltages with 4 measuring ranges: 3 30 V, 6 60 V, 30 300 V and 60 600 V. The CM EFS. 2P offers window (over and undervoltage) monitoring as well as