MMA Standard Dc Transformer voltage / 3x400 Power Range/ 50-450 A Duty cycle / 35%: 450 A / 60%: 330 A / 100%: 230 A Open circuit voltage / 75 V Frequency / 50 Hz - 60 Hz Mains fuses / 20 A Max. connected power / 12.5 KvA Recommended generator rating / 21.1 KvA Cos / 0.9 Protection classification / IP 21 s Insulation class / H Dinse / 50 mm2 Weight / 123Kg Dimensions (mm) (WxLxH) / 440X850X760 mm Electrodes diam / 1.5-8.0