ARC630I features: Multi-Functional: MMA and Carbon Arc Gouging, Digital Meter to Pre-Set and Display Welding Current, Arc-Force for Anti-Sticking, Hot-Start (0-160A) to start the Welding Arc Smoothly, VRD Function --- Safe for Welders, Remote-Control Function Optional, Outstanding Arc Stability with Low Spatter, Wide Range for, Input Voltage: 380V +- 15%, Dust-Free Cooling System with Upgraded Duty Cycle.