Current monitoring relay PRI-51/2 002471817

Current supervision in a compact edition

The PRI-51/2 current monitoring relay is a reliable and easy-to-use device that allows you to monitor current consumption in single-phase circuits. Its compact dimensions – 18 mm wide, 90 mm high and 65 mm deep – allow for easy mounting on a DIN rail, even in crowded control cabinets. This is an ideal solution for both installers and end-users who need an effective way to control load and protect installations.

Functionality and flexibility

The device is designed to monitor currents in the range of 0.2 to 2 A. This makes it suitable for control systems, monitoring motors, heating or signaling current consumption. The ability to smoothly adjust the current threshold using a potentiometer and set a delay (0.5…10 s) ensures precise adaptation to specific application needs. It is worth mentioning the universal supply voltage of AC 24…240 V and DC 24 V – this increases installation flexibility and minimizes compatibility issues. Galvanic isolation of the power supply from the measured current further increases safety.

Mounting and connections

The PRI-51/2 relay is equipped with convenient screw terminals, which facilitate and speed up the connection of wires. It has one changeover contact with a load capacity of 8 A, which allows you to control external devices or signal exceeding the defined current threshold. In combination with a current transformer, the monitored current range can be extended up to 600 A – this is particularly useful in industrial applications and buildings with high electricity demand.