This single-functional current monitoring relay is designed for over- and undercurrent monitoring. It uses a RMS measuring principle to measure both DC and AC currents. The relay has 3 measuring ranges: 3-30 mA, 10-100 mA, and 0.1-1 A. It operates according to the open-circuit principle and requires a control supply voltage of 220-240 VAC. The relay features a 1 CO (SPDT) output contact rated at 250 V/4 A. It also has double-chamber cage connection terminals for easy installation.