ABB CM-SFS.21S SINGLE-FUNCTIONAL CURRENT MONITORING RELAY 3-30mA, 10-100mA & 0.1-1A, CONTROL 24-240VAC/DC 2CO ON/OFF DELAY SELECTION

The Single-functional current monitoring relay is designed for over- and undercurrent monitoring. It uses a RMS measuring principle to measure DC and AC currents in three different ranges: 3-30 mA, 10-100 mA, and 0.1-1 A. This relay operates with a rated control supply voltage of 24 - 240 V AC / DC. It has either 2 x 1 CO or 1 x 2 CO contacts output, with contacts rated at 250 V / 4 A. It offers window monitoring for both over- and undercurrent conditions, allowing you to select ON- or OFF-delay as well as open- or closed-circuit operating principles. Additionally, it can be used with or without a latching function. The tripping delay and start-up delay of this relay are adjustable within a range of instantaneous to 30 s (0, 0.1-30 s). It features double-chamber cage connection terminals for easy installation.