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Model ST MMA 250S Compact & light weight MMA ( ARC ) welder. With ARC Force adjustment. Made with IGBT transistors Capable of welding up to gauge 08 (4.0 mm) welding electrodes Continuous welding capacity using AWS ER 6013 electrodes Gauge 12 (2.5 mm) nonstop Gauge 10 (3.2 mm) up to 30 rods continuously. Output range : 20 A / 20.8 V – 140 A / 25.6 V Required input power 13 A (Minimum) / 230 V using a 15 Ampere rated power supply and MCB 6 Months repair warranty