The Ralli Wolf RA40GT is a heavy-duty 400 Amps digital ARC welding machine engineered for the most demanding industrial welding applications. Backed by Ralli Wolf's 60+ years of manufacturing expertise, this top-tier ARC series welder stands out with its multi-phase compatibility, operating seamlessly across single-phase, two-phase, and three-phase power supplies — making it one of the most versatile machines in the Ralli Wolf welding range.

The RA40GT is built with Voltage Reduction Device (VRD) technology for enhanced operator safety, along with precise ARC control that delivers high penetration and stable, consistent welds even on thick structural sections. Its ARC stability ensures uninterrupted performance across long welding sessions, while the energy-saving design helps optimize power consumption during operation. With a wide output current range of 30-400A and support for welding rods from 2.5mm to 4.0mm, this machine is built for serious, large-scale welding jobs.

Designed for flexible deployment, the RA40GT accepts 1Ph-230V, 2Ph-415V, or 3Ph-415V input supply at 50/60Hz, giving operators the freedom to use it across a wide range of industrial power setups. Despite its substantial power output, the machine remains manageable at 10 Kg net weight, and its digital display allows for real-time monitoring of welding parameters for precise control.

Built to an IP21 housing protection grade with Class F insulation, the RA40GT is designed for reliable performance in tough industrial environments. Manufactured to ISO 9001:2015 quality standards, the Ralli Wolf RA40GT is the ideal choice for professionals and industrial operations that need maximum power, multi-phase flexibility, and consistent weld quality.

Key Features

• 400 Amps Output – Delivers maximum power for heavy industrial welding applications
• 1Ph, 2Ph & 3Ph Compatible – Exceptional flexibility across multiple power configurations
• VRD (Voltage Reduction Device) – Enhanced safety feature for operator protection
• Precise ARC Control – Stable, accurate arc for consistent, high-quality welds
• High Penetration – Strong weld penetration for thick structural sections
• ARC Stability – Consistent performance across extended welding sessions
• Energy Saver – Optimized power consumption during operation
• Light Weight & Portable – 10 Kg net weight despite high power output
• Digital Display – Real-time monitoring of welding parameters
• Wide Output Current Range – 30-400A for large-scale, heavy-duty welding jobs

Technical Specifications

Note: Welding accessories are optional and not included as standard.

Applications

• Heavy industrial and structural steel welding
• Large-scale fabrication and construction projects
• Shipbuilding and heavy engineering welding
• Pipeline and pressure vessel welding
• Bridge and infrastructure welding
• Industrial plant maintenance welding
• Thick-section welds requiring high penetration and amperage
• Multi-phase industrial power environments