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. The relay has 3 measuring ranges: 0.3-1.5 A, 1-5 A, and 3-15 A. It operates according to the open-circuit principle and requires a control supply voltage of 24-240 VAC/DC. The relay features 2 CO (SPDT) output contacts rated at 250 V/4 A. The tripping delay can be adjusted from instantaneous to 30 s (0, 0.1-30 s). It also has double-chamber cage connection terminals for easy installation.