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GB MMA 400 GI Welding Machine – Heavy-Duty Industrial ARC Inverter Welder

The GB MMA 400 GI Welding Machine is a professional 400A MMA (Manual Metal Arc) inverter welding machine designed for heavy industrial fabrication, construction, maintenance, and structural steel applications. Built with advanced IGBT inverter technology, it delivers excellent arc stability, reduced power consumption, and reliable performance for continuous welding operations. It features a compact, lightweight design with VRD (Voltage Reduction Device) for enhanced operator safety and efficient welding performance.

Designed to operate on 3 Phase AC 415V, the MMA 400 GI provides an adjustable welding current from 20A to 400A, making it suitable for welding mild steel, carbon steel, stainless steel, and alloy steel using a wide range of coated electrodes. The machine is ideal for fabrication workshops, construction sites, shipyards, and industrial maintenance.

Features:

• Brand: GB
• Model: MMA 400 GI
• Product Type: MMA ARC Inverter Welding Machine
• Technology: Advanced IGBT Inverter Technology
• Input Voltage: 3 Phase AC 415V ±15%
• Frequency: 50/60Hz
• Output Current Range: 20–400A
• Maximum Output Current: 400A
• VRD (Voltage Reduction Device) Function
• Stable Arc Performance
• Easy Arc Starting
• Low Spatter & Smooth Welding
• Compact & Lightweight Design
• Energy-Saving Operation
• Forced Air Cooling System
• Over-Voltage, Over-Current & Overheat Protection
• Suitable for Continuous Industrial Welding

Specifications:

• Input Voltage: 3 Phase AC 415V ±15%
• Rated Input Capacity: 18.2kVA
• Rated Input Current: 17.2A
• Output Current: 20–400A
• No Load Voltage: 60V
• Duty Cycle: 60%
• Efficiency: 85%
• Power Factor: 0.93
• Electrode Diameter: 2.5–4.0mm
• Protection Class: IP21
• Insulation Class: F
• Dimensions: 415 × 262 × 468mm