K3131-3 - Lincoln Magnum PRO 350 Dual Procedure MIG Gun 20ft K3131-3

Industrial Grade Performance for Heavy Fabrication

The Lincoln Electric Magnum® PRO 350 Dual Procedure Welding Gun (K3131-3) is a premium semiautomatic MIG gun designed for the most demanding industrial environments. Engineered for high-amperage applications, this air-cooled gun delivers a robust 350 Amps at 100% duty cycle when using CO2 gas, and 285 Amps at 100% duty cycle with mixed gas. It is the ideal tool for heavy fabrication, shipbuilding, and construction where downtime is not an option.

Dual Procedure Capability

This model features Lincoln's Dual Procedure technology, equipped with 4 trigger leads. When paired with a compatible wire feeder, this allows the welder to toggle between two different welding schedules (such as voltage and wire feed speed) directly from the gun trigger. This feature significantly increases efficiency by reducing the need to return to the power source to adjust settings between different joint configurations or positions.

Superior Consumable Life

The Magnum PRO 350 utilizes Lincoln Electric's Copper Plus® contact tips. These tips are designed with a larger diameter and greater mass than standard tips, improving heat dissipation and extending tip life. The patent-pending Anti-Seize tip and diffuser thread design further ensures that consumables remain easy to remove and replace, even after long periods of high-heat welding.

Built for the Welder

Despite its heavy-duty rating, the gun is designed with operator comfort in mind. The Comfort Grip™ handle is barrel-styled, lightweight, and balanced to minimize hand fatigue during long shifts. The Secure-Lock gun tube prevents the nozzle end from rotating unexpectedly, ensuring consistent alignment and weld quality.