Mains voltage: 230/400 V Netzfreqünz: 50/60 Hz switching stages: continuous open-circuit voltage max. 230/240 V: 32 - 38 V open circuit voltage up to 400 V: 38 - 46 V Fuse 230/240 V: T 16 A fuse 400 VT 16 A Insulation class: H Protection: IP21 Setting variable V at 230/240: 30 - 110 A Continuous adjustment range at 400 V: 65 - 155 A Cooling: S Weldable electrodes at 230/240 V: 1.6 - 2.5 mm Weldable electrodes at 400 V: 2 - 3.25 mm