NBC series welder has characteristics of stable welding arc,small splash,small deformation, welding seam is beautiful. Especially it suits to thin and medium plate of continued welding and discontinuous spot,welding high reliability,maintain simply.It is your best choice. Parameters: 1) Rated input voltage: 3-phase AC 380V 2) Frequency: 50Hz 3) Open circuit voltage: 16-33V 4) Rated output current: 250A 5) Duty cycle: 35% 6) Current adjustment range: 50-250A 7) Output voltage: 26.5V 8) Dimensions: 645×395×768mm 9) Weight: 86kg