... is 220V, CAT312D is 110V/220V Inverter DC TIG / MMA / Plasma Cutting 3-In-1 Welder CAT312(D) is TIG120+MMA120+CUT30Features ... in one machine, TIG welding, MMA welding and air plasma cutting4.Compact and easy for operation5."D" Series are for ... duel voltage input, automatic input voltage changing6.Complete accessories: welding torch, welding cable,earth clamp, welding holder, cutting torch,carton box