K3131-1 - Lincoln Magnum PRO 350 Dual Procedure MIG Gun, 10ft, 350A

Industrial Grade 350A MIG Gun with Dual Procedure Control

The Lincoln Electric Magnum® PRO 350 Dual Procedure Welding Gun (K3131-1) is a high-performance semi-automatic MIG gun designed for the most demanding industrial environments. Engineered for high amperage applications, this air-cooled gun is rated at 350 amps at 100% duty cycle when using CO2 shielding gas, and 285 amps at 100% duty cycle with mixed gas. It is specifically built to withstand extreme heat and rigorous use in sectors such as heavy fabrication, shipbuilding, and construction.

A defining feature of this model is the Dual Procedure capability. The gun is equipped with a specialized switch and 4 trigger leads, allowing the welder to toggle between two distinct welding procedures (such as voltage and wire feed speed settings) directly from the handle. This functionality significantly enhances efficiency by reducing the need for the operator to walk back to the wire feeder to adjust parameters during complex welds.

Advanced Consumable Technology

The Magnum PRO 350 utilizes Lincoln Electric's Copper Plus® Contact Tips. These tips feature a larger diameter and greater mass compared to standard tips, which improves heat dissipation and extends tip life. The patent-pending Anti-Seize tip and diffuser thread design further ensures reliability by preventing parts from fusing together, making maintenance faster and easier. The Secure-Lock gun tube design prevents the tube from rotating unexpectedly, ensuring consistent alignment during operation.

Ergonomics and Durability

Operator comfort is prioritized with the Comfort Grip™ handle. The barrel-style design is lightweight and balanced, minimizing hand and arm fatigue during long welding shifts. The construction employs industrial-grade components, including aircraft-grade aluminum and high-quality copper, to ensure superior electrical conductivity and heat resistance. The 10-foot cable provides adequate reach for standard workstation setups while maintaining optimal wire feeding performance.