Specifications: 220A output, 220V ±15%, 50/60Hz, 7.2KVA input, 33A current, 45V no-load voltage, 1-5mm electrodes, IGBT, VRD, IP21S, Smart Fan cooling Advanced IGBT inverter technology ensures consistent performance and arc stability Built-in Hot Start and Anti-Stick, plus adjustable Arc Force for smooth operation Supports heavy-duty welding with larger electrodes up to 5mm for industrial jobs Voltage compensation and fan-cooled design for safe, stable, long-duration welding