Dold Insulation Monitoring Relay, 1, 3 Phase, SPDT, 0 → 500V ac, DIN Rail / 1812774

Features • According to IEC/EN 61 557-8 • For single and 3-phase AC-systems up to 0 .. 500 V and 10 .. 1000 Hz • Monitors also disconnected voltage systems • Adjustable tripping value 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 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