K471-13 - Lincoln Magnum 400 MIG Gun, 400A, 25 ft, .035-.045 in Wire

Heavy-Duty Performance for Industrial Fabrication

The Lincoln Electric Magnum 400 Semi-Automatic MIG Gun (K471-13) is engineered for high-amperage welding environments where durability and reach are paramount. Rated at 400 amps with a 60% duty cycle using CO2 gas, this air-cooled gun is designed to handle the rigorous demands of heavy fabrication, structural steel, and equipment manufacturing. The K471-13 configuration comes equipped with a 25-foot cable assembly, providing exceptional operational range without compromising wire feedability or arc stability. This extended length is particularly advantageous for working on large weldments where moving the wire feeder is impractical.

Robust Construction and Design

Lincoln Electric has constructed the Magnum 400 series with longevity in mind. The cable features a higher copper strand count than the smaller Magnum 300 series, ensuring efficient current transfer and superior heat dissipation during prolonged welding sessions. The outer jacket is made from abrasion-resistant extruded rubber, which protects the internal power cable and liner from the cuts, burns, and wear typical of harsh shop floors. The gun tube itself is armored with an electrically insulated metal jacket, optimizing performance for fine wire welding and protecting the gooseneck from impact damage.

Precision and Compatibility

This model is factory-configured for .035 to .045 inch (0.9-1.2 mm) wire diameters, making it ready for immediate deployment in standard MIG or gas-shielded flux-cored applications. The gun utilizes industry-standard Magnum consumables, ensuring that contact tips, nozzles, and diffusers are readily available and easy to replace. The one-piece modular trigger assembly is molded from high-heat resistant material to withstand spatter and ensure reliable arc initiation every time. With its robust strain relief system and high-quality internal components, the K471-13 minimizes downtime associated with liner kinks or cable failures.