ABB CM-SRS.21S.240 SINGLE-FUNCTIONAL CURRENT MONITORING RELAY 3-30mA, 10-100mA & 0.1-1A, CONTROL 220-240VAC 2CO ADJUSTABLE TRIPPING DELAY

The Single-functional current monitoring relay is designed for over- and undercurrent monitoring. It uses a RMS measuring principle to accurately measure DC and AC currents. The relay has 3 measuring ranges: 3-30 mA, 10-100 mA, and 0.1-1 A. It operates based on the open-circuit principle. The relay requires a rated control supply voltage of 220-240VAC. It features 2 CO (SPDT) output contacts that are rated at 250 V / 4 A. The tripping delay can be adjusted from instantaneous to a maximum of 30 seconds (0, 0.1-30 s). For easy installation, the relay is equipped with double-chamber cage connection terminals.