[Ui] rated insulation voltage800 V AC 50/60 Hz[Uimp] rated impulse withstand voltage8 kV[Ics] rated service short-circuit breaking capacity90 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-250 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-250 kA at 440 V AC 50/60 Hz conforming to IEC 6094..