Standards:IEC/EN 60898-1IEC/EN 60947-2UL 1077Tripping Characteristic:CRated Operational Voltage:acc. to IEC 60898-1 230 / 400 V ACacc. to IEC 60898-1 230 Vacc. to IEC 60947-2 230 V ACOperational Voltage:Maximum (Incl. Tolerance) 253 V ACMaximum (Incl. Tolerance) 72 V DCMinimum 12 V ACMinimum 12 V DC..