Inverter Based Air Plasma Cutting Machine has soft switch, dc output and frequency of 100 khz. The Machine has wide working voltage range, strong adaptability to electricity power grid, good ability of interference resistance, automatic voltage compensation, and stable cutting current and steady arc. The Machine is offered in Compact structure, portable design and is energy saving type in nature. The Inverter Based Air Plasma Cutting Machine requires easy maintenance and is provided with 110/ 220 v dual automatic input voltage shift.