MODEL RT 400 RT 600 Input Input Supply Voltage 415 V ± 10% 3Ph 50 Hz 415 V �± 10% 3Ph 50 Hz KVA (Max) 21.5 39 Primary Current 30A 55A Output Open Circuit Voltage 95 V 95 V Rated Current 400A 600A Max. Const. Hand Welding Current (60%) 400 A 600 A Max. Automatic Welding Current (100%) 310 A 470 A Current Range (A) 10-400 10-600 General Insulation Class H H Protection IP 23 IP 23 Type of Cooling Forced Air Forced Air Weight (approx) 112 kg 145 kg Dimensions (approx) Length (mm) 700 700 Width (mm) 400 500 Height (mm) 750 900