... appearance CE, ROHS MMA-250 Welding EquipmentTechnical Specification Model Specification MMA-250Rated input voltage(V)110/220Input capacity(KW)8.8Frequency( ... over-voltage and over-current, thermostatic protection, moveable welding cable.4.Strong welding permeability, less splash, good weld appearance, sound-proof ... material. 7.With complete accessories. 8.Carton box/BMC. inverter arc welding machine