Royce Welding Machine 400s, Royce Mma-400s Inverter Welding Machine.

Technology: Utilizes advanced IGBT inverter technology, which ensures stable performance, high working efficiency (around 85%), and low no-load loss. Welding Type: Designed for manual metal arc (MMA) welding using fusible electrodes. Current Range: Capable of a current output range of approximately 20-200A (some sources indicate up to 400A output for the '400S' model), allowing it to handle various welding tasks on metals like steel, stainless steel, and copper. Performance: Offers superior quality welds, easy arc initiation, stable arc control, and excellent penetration. Usability: Features electronic components and microprocessors for a compact design, making it portable and easy to carry and use.