k471-1 - Lincoln Magnum 400 Semi-Automatic MIG Gun, 400A, 10ft, .035-.045

Heavy-Duty Industrial MIG Welding Gun

The Lincoln Electric Magnum 400 MIG Gun (K471-1) is a premier solution for semi-automatic arc welding in high-amperage industrial environments. Engineered to handle the rigorous demands of heavy fabrication, this air-cooled gun is rated for 400 amps at a 60% duty cycle using CO2 gas. It is specifically configured with a 10-foot cable assembly and is set up out of the box to handle wire diameters ranging from .035 to .045 inches (0.9 to 1.2 mm), making it versatile for a wide array of structural and manufacturing applications.

Technically, the Magnum 400 stands out due to its robust internal construction. The cable features a higher copper strand count compared to the Magnum 300 series, ensuring superior electrical conductivity and heat dissipation during prolonged welding sessions. The gun tube is armored with an electrically insulated metal jacket, which not only protects the internal components but also optimizes fine wire welding performance by maintaining liner integrity. The outer jacket is composed of abrasion-resistant extruded rubber, providing exceptional durability against the rough conditions typical of shop floors and construction sites.

Maintenance and longevity are key focuses of the K471-1 design. It utilizes a one-piece modular trigger assembly molded from high-heat-resistant material. This design resists the damaging effects of radiant heat and spatter, ensuring clean electrical signals and a long service life. The gun also features a rotatable gooseneck, allowing operators to adjust the angle for optimal access to awkward joints without stressing the cable. Compatible with standard Lincoln Electric consumables, this gun integrates seamlessly into existing Lincoln wire feeder setups equipped with the standard 4-pin connection.