Dold Phase, Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail

Multifunctional device for monitoring three-phase networks for undervoltage / overvoltage. Phase sequence asymmetry, mains failure (in accordance with IEC 255, VDE 0435 part 303).

Recognition of

    - Undervoltages / overvoltages
    - Asymmetry
    - Phase failure
    - Phase sequence

Impervious to harmonics up to a distortion factor of K 20 %
Fallback delay adjustable from 0.1 → 5 s
One LED indicator for each of the following: auxiliary voltage A1 / A2; overvoltage U_MAX; undervoltage U_MIN; asymmetry / phase sequence / mains failure; contact position
One device for networks with and without a neutral conductor
Rest current principle
2 changeovers
Overall width 45 mm

Phase Sequence/Failure Relays

Monitoring of 3 phase supplies
Orange housing manufactured to DIN 43 880
DIN rail mount