Insulation monitor MK 5880N The insulation monitors MK 5880N and MH 5880 of the VARIMETER IMD family provides best insulation monitoring of pure three-phase and AC IT systems in a state of the art way fulfilling the relevant standards. The adjustment of the setting values is simple and user friendly done on 2 rotary switches on the front of the device. The MH 5880 also has a galvanic separated analogue output and a 11 step LED chain for display the actual insulation value. Features . According to IEC/EN 61557-8 . For single and 3-phase AC-systems up to 0 ... 500 V and 10 ... 1000 Hz . Monitors also disconnected voltage systems . Adjustable tripping value RAL of 5 ... 100 kΩ . De-energized on trip . Auxiliary voltage, measuring circuit and output contacts are galvanically separated . Manual and auto reset . With test and reset button . Connections for external test and reset buttons possible . LED indicators for operation and alarm . 2 changeover contacts . MK 5880N/200 with additional prewarning - Adjustable prewarning value 10 kΩ ... 5 MΩ - 1 output relay for alarm and 1 for pre-warning . MH 5880/500: similar to MK 5880N but with galvanic separated analogue output and 11 step LED chain for the actual insulation value . Wire connection: also 2 x 1.5 mm2 stranded ferruled, or 2 x 2.5 mm2 solid DIN 46 228-1/-2/-3/-4 . As option with pluggable terminal blocks for easy exchange of devices - With screw terminals - Or with cage clamp terminals . MK 5880N: 22.5 mm width MH 5880: 45 mm width Technical specifications Width: 22,5mm Enclosure design: Switch cabinet IMD type: AC Nominal voltage IT system: AC 0 - 500V Response value type: Adjustable Response value: 5 - 100kΩ Earth fault indicator: Yes Auxiliary voltage: AC, DC Type: MK 5880N Manufacturer: E. Dold & Söhne GmbH & Co. KG Type: MK5880N.12 AC50-400HZ 220-240V Art. No.: 0054044