100Vac, 110Vac, 230Vac, 400Vac (Rated voltage selectable via DIP settings). Settable Hysteresis 3, 6, 10%. Accuracy: Un = 100 V / 110 V / 230 V / 400 V 1% (phase to phase Voltage) and (phase to ground Voltage). Thermal capacity: Continuous 520 V ac. IEC 60255-1