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: 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 110-130 VAC. The relay has 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). The relay features push-in terminals for easy installation.