The Lincoln Electric Magnum® PRO 450 Dual Procedure Welding Gun (K3133-4) represents the pinnacle of air-cooled MIG torch engineering for high-amperage industrial applications. Designed specifically for environments where downtime is not an option, this 25-foot assembly is rated for a 100% duty cycle at 450 Amps when using CO2 shielding gas, and 325 Amps at 100% duty cycle with mixed gases. The defining feature of this model is its Dual Procedure capability, integrated directly into the handle. A convenient rocker switch allows the operator to toggle between two distinct welding procedures (such as voltage and wire feed speed settings) on compatible wire feeders. This functionality significantly increases efficiency in complex fabrication scenarios where varying joint configurations or positions require rapid parameter adjustments.
Mechanically, the Magnum PRO 450 is built to withstand abuse. It utilizes Lincoln Electric’s proprietary Copper Plus® contact tips, which feature a larger diameter and greater mass than standard industry tips. This design enhancement improves heat dissipation, keeping the tip cooler and extending its service life—a critical factor in high-duty cycle automation and manual welding. The gun also features the Secure-Lock™ gun tube system, which ensures the tube remains fixed in position and resists rotational slipping during operation, maintaining consistent tool center points and operator orientation.
Maintenance and serviceability are streamlined through the use of Anti-Seize™ threads on both the contact tips and diffusers. This patent-pending thread design prevents the components from fusing together under extreme heat, ensuring that consumable changes are fast and tool-free when necessary. The gun is compatible with wire diameters ranging from 0.035 inches to 5/64 inches, making it versatile for structural steel, heavy equipment manufacturing, and shipbuilding. The K3133-4 assembly includes the gun, a 25-foot cable, and a standard set of Magnum PRO consumables to get you started immediately.
| Additional Information |
|---|
| Brand:Lincoln Electric |
| Amperage:450 |
| Packaging Description:1 Per Ea |
| Cable Length:25 ft |
| Amperage Rating:450 A |
| Duty Cycle:100% |
| Wire Size Range:0.035" - 5/64" |
| Cooling Method:Air Cooled |
| Process:MIG (GMAW), Flux-Cored Arc Welding (FCAW), Pulsed MIG (GMAW-P) |
| Gun Type:Handheld, Dual Procedure |
