The Lincoln Electric Magnum PRO AL FC 450 Water-Cooled Rear Trigger MIG Welding Gun is a heavy-duty, 450-amp welding gun optimized for sustained high-duty-cycle MIG/GMAW aluminum and flux-cored (FCAW) production welding. Water cooling allows the gun body and cable to operate at temperatures that would exceed the limits of air-cooled designs during high-amperage, long-arc-on production cycles. The rear trigger placement provides natural hand positioning for flat, horizontal, and forehand welding applications, reducing operator fatigue during extended production shifts.
With a 12-pin Lincoln Electric feeder connection, cable lengths from 15 ft to 50 ft, and replaceable contact tips, nozzles, and liners, the Magnum PRO AL FC 450 RT combines high-amperage capacity with the field-maintainability and feeder compatibility that professional fabrication operations require. This gun is the water-cooled, rear trigger counterpart to the front trigger 450 model, allowing shops to select the trigger configuration that matches operator preference and welding position demands without sacrificing amperage capability.
- K4796-1 – Magnum PRO AL FC 450 Water-Cooled, 12-Pin, Rear Trigger, 15 ft
- K4796-2 – Magnum PRO AL FC 450 Water-Cooled, 12-Pin, Rear Trigger, 25 ft
- K4796-3 – Magnum PRO AL FC 450 Water-Cooled, 12-Pin, Rear Trigger, 35 ft
- K4796-4 – Magnum PRO AL FC 450 Water-Cooled, 12-Pin, Rear Trigger, 50 ft
- 450-amp water-cooled rating — enables sustained production welding at high duty cycles beyond air-cooled gun limits
- Rear trigger ergonomics — natural hand position for flat, horizontal, and forehand production welding
- 12-pin connection — factory-matched to Lincoln Electric wire feeders and power sources
- Aluminum and flux-cored wire capable — dual-process versatility at high-amperage production levels
- Four cable length options: 15 ft, 25 ft, 35 ft, 50 ft — configurable for varied production cell layouts
- Water cooling circuit — maintains safe gun and cable operating temperatures during sustained high-amperage welding
- Replaceable consumables — extended service life through in-field tip, nozzle, and liner replacement
- High-deposition aluminum MIG/GMAW in flat and horizontal position production environments
- Heavy FCAW structural welding with sustained duty cycle requirements
- Shipbuilding, offshore, and heavy transportation manufacturing with high-amperage aluminum welding
- Pressure vessel and boiler fabrication requiring long arc-on time at 450A
- Automotive and rail manufacturing with high-cycle production MIG/GMAW
The Lincoln Electric Magnum PRO AL FC 450 Water-Cooled Rear Trigger MIG gun provides 450-amp high-duty-cycle welding performance with rear trigger ergonomics for operators who prefer natural hand positioning in flat and horizontal production welding. Water cooling, 12-pin feeder compatibility, multiple cable lengths, and field-replaceable consumables make the Magnum PRO AL FC 450 RT the heavy-duty MIG gun solution for the most demanding aluminum GMAW and FCAW production environments.