MRU1P is monitoring relay designed to control set voltage level in singlephase and DC systems. Relay can be set for overvoltage or undervoltage control.

Relay is by default supplied by following voltages: 24 VAC, 24 VDC and 230 VAC. The relay has one output doublethrow contact 8 A.

Device functions

MRU1P fce
Max / Min voltage level control

After making a proper connection of supply voltage green LED turns on. If this voltage drops below (exceeds) the set level minus fix hysteresis 5%, yellow LED turns on and output is closed. If controlled voltage exceeds (drops below) the set value yellow LED turns off and output is opened. Control voltage level is possible to set via rotary button on the front panel in range 80 ... 115% of nominal voltage.

Voltage monitoring relay

Main features

  • Voltage level monitoring
  • Designed for AC and DC application
  • Adjustable voltage level 80 ... 115%
  • DFT (Discrete Fourier Transformation)
  • Digital optical operation status signalisation