Dold Insulation Monitoring Relay, 1, 3 Phase, DPDT, 0 → 500V ac, DIN Rail / 1812772

For single and 3-phase AC-systems up to 0 .. 500 V and 10 .. 1000 Hz Monitors also disconnected voltage systems Adjustable tripping value RALof 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 pre warning adjustable pre warning 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