10401332 - Tweco SXT415-35-45 Supra-XT 400A MIG Gun 15ft

Heavy-Duty Tweco Supra-XT 400A MIG Gun

The Tweco Supra-XT 400A MIG Gun (15ft), identified by SKU 10401332 (Internal: TWE1040-1332), is a premier choice for professional welders seeking reliability and comfort in high-amperage applications. Designed by Tweco, a leader in welding accessories, the Supra-XT series is engineered to withstand the rigors of industrial environments while providing superior arc stability and wire feeding performance. This specific model, the SXT415-35-45, comes equipped with a 15-foot cable, offering the necessary reach for working around large assemblies, structural steel, and heavy machinery without constantly moving the power source.

At the core of this gun is its impressive 400 Amp rating at a 60% duty cycle using CO2 gas. This power capacity makes it ideal for welding medium to heavy-gauge steel, ensuring deep penetration and consistent bead profiles. The gun is air-cooled, which simplifies the welding setup by removing the need for complex water-cooling systems, yet it manages heat dissipation effectively through its robust construction and high-quality copper components. The "SEHD" designation points to its Standard Ergonomic Heavy Duty design, featuring a handle that fits naturally in the hand to reduce operator fatigue during long shifts.

Maintenance and consumable management are straightforward with the Supra-XT. It utilizes the industry-standard Tweco 14 Series contact tips, 24 Series nozzles, and 54 Series gas diffusers. These parts are widely available and easy to swap out, minimizing downtime. The gun comes factory-installed with a liner setup for .035" to .045" wire, covering the most common wire diameters used in general fabrication. Whether you are welding in a shop or on a job site, the Tweco Supra-XT 400A MIG Gun delivers the durability and performance required to get the job done right.

Key Benefits:

• High amperage capacity for heavy fabrication.


• Ergonomic handle design for improved comfort and control.


• Rugged cable construction with excellent strain relief.


• Compatible with standard, easy-to-find Tweco consumables.