... loop feedback control,constant voltag NB(MIG) IGBT CO2 shielded welding machine series NB-280/NB-350/NB-600TraitIGBT inverter technology,current-mode control ... other industry.Cost-saving,can completely replace welder with taps. NB IGBT CO2ModelParameterNB-280NB-350NB-600 Rated input voltage (V)AC ... 201-30Dimensions (mm)576*297*574636*322*584636*322*584 NB(MIG) IGBT CO2 shielded welding machine series