DC MMA welding machine 1.Adopt with advanced MOS/IGBT inverter technology, save energy, protect the environment, light and compact ... high efficiency. 3. Fan-cooled, automatic protection of over-voltage and over-current, thermostatic protection, moveable welding cable. 4. ... 8. Carton box/BMC. ItemZX7-250ZX7-315ZX7-400ZX7-500Rated input voltage(V)380V380V380V380VFrequency (Hz)50/6050/6050/6050/60No-load ...