... MOS/IGBT inverter technology CUT-40 Air Plasma Cutting welding machine Technical Specification Model Specification Digital CUT-40Rated input ... can be adjusted stepless, high efficiency.3.Fan-cooled, automatic protection of over-voltage and over-current, thermostatic protection, ... .4.Starting arc with or without contact, useable curve cutting celerity, no curliness, stable output and long working life ...