Dold SL5880.12 AC50-400HZ 220-240V Safety relay, Part N: 0055396

The insulation monitor IL 5880 of the series VARIMETER IMD monitors the insulation resistance of isolated single phase or 3-phase voltage systems (IT-systems) with nominal voltage up to AC 0 ... 500 V. The separate supply voltage (auxiliary voltage) allows also monitoring when the system is without voltage. The device has LEDs to indicate the operating status. The response value can be set in a user-friendly way on the front of the device via a potentiometer.