Main Features:1.Ac three-phase input power,fan-cooling,thermostatic protection;2.Suitable for GAS MIG/MAG welding machine;3.12-step current adjustment professional welder,professional GAS shield welder with high duty cycle;4.With complete accessories:MIG torch with cable,earth clamp with cable,and power supply cable;5.Wooden case for packing;Has 3 Models:NBC-200,NBC-250,NBC-300. 1)Model:NBC-200 ,Supply Voltage:380V, No-load Voltage:18-30V, Current Range:35-200A, Rated Duty:60%, Input Capacity:6.9KVA, Class of Insulation: F, Suitable Electrode:0.8-1.0mm, Weight:80KG, Packing Size:670*400*890mm 2)Model:NBC-250 Supply Voltage:380V, No-load Voltage:18-35V, Current Range:35-250A, Rated Duty:60%, Input Capacity:9KVA, Class of Insulation: F, Suitable Electrode:0.8-1.2mm, Weight:85KG, Packing Size:670*400*890mm 3)Model:NBC-300 Supply Voltage:380V, No-load Voltage:18-38V, Current Range:35-300A, Rated Duty:60%, Input Capacity:13.2KVA, Class of Insulation: F, Suitable Electrode:0.8-1.2mm, Weight:95KG, Packing Size:670*400*890mm