The Ralli Wolf RS25 is a digital drawn arc stud welding machine built specifically for steel structure fabrication, with a dual-purpose design that also functions as a 2500A MMA rectifier for conventional arc welding. That versatility makes it a practical choice for fabrication shops and construction sites that need both stud welding and general arc welding capability without running two separate machines.

Running on a 415V ± 10%, 3-phase supply, the RS25 delivers a working current range of 200–2000A with a 60% duty cycle, giving it strong sustained output for structural steel work. It handles stud diameters from Ø10 to Ø25mm, and ships with a stud gun on a 10m cable — long enough to work across large fabrication areas or structural assemblies without repositioning the machine constantly.

An H-class insulation rating supports reliable performance under sustained thermal load in demanding industrial environments. At 70kg and 830 x 520 x 850mm, it's built as stationary shop or site equipment, mounted on wheels for repositioning between work areas. Standard accessories include the stud gun and an electric welding handle, covering both its stud welding and MMA rectifier functions out of the box.

Key Features

• Dual-function: drawn arc stud welder and 2500A MMA rectifier in one machine
• Digital front panel for precise monitoring and control
• Stud gun supplied with 10m cable for extended reach
• Wide working current range: 200–2000A
• 60% duty cycle for sustained structural welding work
• H-class insulation for reliable performance under heavy use
• Specialized for steel structure fabrication

Technical Specification

Application

• Steel structure fabrication and manufacturing
• Structural steel stud welding for construction
• General arc (MMA) welding using the built-in rectifier function
• Industrial fabrication shops needing dual welding capability
• Construction sites requiring both stud attachment and standard welding