Specifications: 440V input, 3-phase power, 400A maximum output, adjustable Hot Start, Anti-Stick, and Arc Force functions, 85% efficiency. Powerful Performance: Designed for heavy-duty applications with continuous welding at 400A, perfect for workshops and industrial settings. Advanced Features: Includes IGBT technology, VRD for voltage regulation, and built-in thermal protection for safety and reliability. Electrode Compatibility: Suitable for a wide range of electrodes (1mm to 5mm), including E6013, E7018, and more. Cooling System: Fan-cooled design ensures efficient heat dissipation for extended operational periods.