... MMA Inverter welder machine 2.Three PCB structure, 3.single-phase/three phase, 4.fan-cooled,themostatic protection [Performance characteristics]1.Control ... features6.temperature protection, overcurrent protection, short circuit protection, phase loss indication function73welder key components of the design of the ... :Contact information: Inverter MMA Welders( IGBT Uni-Transistor Series) with dual power