The MMA-250 is a compact arc welding machine with a power output of 200/250 amps and operates at 220V, 50Hz. It supports electrode diameters of 1.6mm to 3.8mm and weighs only 4.0kg, ensuring portability. Each case contains two units, with a gross weight of 8.5kg and dimensions of 345mm x 210mm x 250mm.