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K4521-2-FM-45 - Lincoln Magnum PRO 400 Water-Cooled MIG Gun 15ft Fast-Mate

Packaging: 1 Per Ea
$3,660.58/EA $2,356.50/1 Per Ea only $2,356.50/EASave 36%

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OVERVIEW

Stay Cool and Weld Longer

Tackle the toughest jobs without breaking a sweat with the Lincoln Electric Magnum PRO 400 Water Cooled MIG Gun. Designed for professional welders who demand reliability, this 400-amp gun is built to run all day at 100% duty cycle, even when using mixed gas. Say goodbye to overheating guns and frequent stops to let your equipment cool down. With the efficiency of water cooling, the front end stays manageable, and the handle remains comfortable in your hand hour after hour.

Comfort is key when you are under the hood for long shifts. The Magnum PRO features a soft rubber over-molded handle that fits naturally in your grip, reducing hand fatigue and improving control. But it's not just about comfort; it's about performance. The premium Copper Plus contact tips are bigger and beefier than standard tips, meaning they handle heat better and last longer. This means fewer tip changes, less frustration, and more arc time.

This model comes with a 15-foot cable, giving you the freedom to move around your workpiece without feeling tethered. The Fast-Mate connection ensures a quick and secure setup with compatible machines. Whether you are running standard MIG, Pulsed MIG, or Flux-Cored wire, the Magnum PRO 400 delivers the consistent wire feeding and arc stability you need to lay down perfect beads every time. It comes ready to weld with a .045" setup, including liner and tip.

Additional Information
Brand:Lincoln Electric
Amperage:400
Duty Cycle:100%
Packaging Description:1 Per Ea
Cooling Method:Water Cooled
Cable Length:15 ft
Connection Type:Fast-Mate
Wire Diameter Range:0.035" - 5/64"
Neck Angle:45 Degrees
Process:MIG (GMAW), Pulsed MIG (GMAW-P), Flux-Cored Arc Welding (FCAW)
Consumable Series:Magnum PRO

INCLUDED

  • Magnum PRO 400 Water Cooled MIG Gun (15 ft)
  • 45° Gun Tube (KP4527-45)
  • Diffuser (KP4380-1)
  • Insulator (KP4525-1)
  • 0.045 in. Contact Tip (KP2745-045)
  • 1/8 in. Recessed 5/8 in. ID Nozzle (KP4523-1-62R)
  • 0.035-0.045 in. 15 ft. Liner (KP44-3545-15)
  • Gun Connector - Fast-Mate

APPLICATIONS

  • Heavy Fabrication
  • Structural Steel Welding
  • Automotive Manufacturing
  • Shipbuilding
  • Robotic Welding Cells
  • High-Amperage Pulsed MIG
  • Flux-Cored Arc Welding

FAQ

The gun is rated at 100% duty cycle at 400 Amps using 90/10 mixed gas.

This model (K4521-2-FM-45) comes with a 15-foot cable.

It uses the Magnum PRO series consumables, specifically the Copper Plus contact tips which are designed for better heat dissipation.

It features a Fast-Mate connector, which is compatible with Euro-style wire feeder connections.

Yes, the Magnum PRO 400 is rated for MIG, Pulsed MIG, and Flux-Cored processes.

It supports a wire diameter range of .035 inches to 5/64 inches.

Yes, it includes a 15 ft. liner for 0.035-0.045 in. wire (KP44-3545-15).

The soft rubber over-molding is designed to enhance operator comfort and provide a better grip, reducing fatigue during long welding sessions.

CATALOGUE & SPEC SHEETS

Spec Sheet