K4528-1 - Lincoln Magnum PRO 100L MIG Gun, 10ft, 4-Pin Connector

Industrial-Grade Performance in a Compact Package

The Lincoln Electric Magnum PRO 100L MIG Gun (K4528-1) represents a significant upgrade in the lightweight welding gun category. Designed to serve as a premium replacement or upgrade for the popular Power MIG series, this 10-foot air-cooled gun combines professional-grade durability with ergonomic features tailored for extended use. It is specifically engineered to fit Lincoln Electric Power MIG 140C, 180C, 180C Dual, and the Power MIG 140 MP, utilizing a standard Lincoln 4-pin trigger connection for seamless integration.

Advanced Consumable Technology

One of the standout features of the Magnum PRO 100L is its utilization of Magnum PRO Copper Plus™ Contact Tips. Unlike standard tips, these feature a larger mass which significantly improves heat dissipation. By keeping the tip cooler during operation, the lifespan of the consumable is greatly expanded, reducing downtime and replacement costs. Furthermore, the gun features Anti-Seize™ threads on the contact tips and diffusers, a critical design element that prevents the components from fusing together due to thermal cycling, ensuring that maintenance and tip changes remain tool-free and frustration-free.

High Duty Cycle for Continuous Work

While many compact MIG guns are rated for lower duty cycles, the K4528-1 is built to perform. It boasts a 100% duty cycle at 100 Amps when using mixed shielding gas. This reliability makes it an excellent choice for demanding projects in light industrial settings, farm repair, and automotive bodywork where consistent arc performance is required without overheating the equipment. The gun comes ready to feed .025-.035 inch wire diameters right out of the box and is capable of handling up to .045 inch wire with the appropriate liner and tip changes.

Ergonomics and Usability

Operator comfort is paramount in the design of the Magnum PRO 100L. The handle features a lightweight, curved design with soft rubber over-molding. This ergonomic shape enhances grip security while minimizing hand fatigue during long welding sessions. The 10-foot cable assembly provides ample reach for working around large workpieces or vehicles, offering flexibility without compromising wire feeding smoothness. Whether you are welding mild steel, stainless, or aluminum (with appropriate liner), this gun delivers the consistent feed and arc stability Lincoln Electric is known for.