Trailblazer® 325 | MillerWelds

Trailblazer® 325 (Kohler), GFCI

Trailblazer® engine driven welders deliver unbeatable arc performance providing the smoothest, most stable arc in the industry. The Trailblazer exclusive Auto-Speed™ technology delivers superior runtimes, increased fuel efficiency, and improved performance. No other compact machine in the 300-amp class delivers more welding power or more auxiliary power with better fuel efficiency and less noise — for productive, profitable, quieter jobsites.
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Unbeatable arc performance
Wide amperage output with better welding deposition rates means you can get jobs done faster, saving time and money. The Trailblazer also has precise arc control, which allows you to fine-tune the arc to match your personal preferences and quickly dial in the perfect parameters to optimize weld quality and maximize productivity across a variety of applications and welding processes.
Auto-Speed™ Technology
Matches engine speed to load — a Miller exclusive. Get the welding power you need — plus reduced fuel consumption and lower noise levels for a more-profitable, safer jobsite. Unlike competitive machines that operate at 3,600 rpm (max) under any load, Miller-exclusive Auto-Speed technology responds to weld requirements by automatically adjusting engine speed to one of four rpm levels so the engine never works harder than necessary. Refueling time and operating costs are reduced, which means more productivity and profitability. Plus everyone on the jobsite gets a better working environment because noise levels and exhaust emissions are lowered.   Learn More
Electronic fuel injection (EFI) (option)
Improve fuel efficiency for maximum productivity and profitability. Adding EFI to your Trailblazer engine-driven welder adds multiple benefits. With EFI, you’ll get faster, more-reliable starts in any weather — no choke adjustments needed. EFI-equipped Trailblazer machines are also up to 42 percent more fuel efficient than standard carbureted models, improving profitability. Plus, refueling less frequently means you’ll spend more of your time welding, improving productivity.   Learn More
Excel™ power (option)
Power at idle — a Miller exclusive. Unlike competitive machines that provide auxiliary power only at 3,600 rpm (max), Excel power delivers a full 2,400 watts (20 A) of 120-volt inverter-based, pure sine wave power at all speeds, including idle. With Excel power you can operate jobsite tools like grinders at quiet, fuel-saving speeds. Refueling time and operating costs are reduced with Excel power, which means more productivity and profitability. Plus everyone on the jobsite gets a better working environment because noise levels and exhaust emissions are lowered. Excel power — available only from Miller.   Learn More
ArcReach® Technology
ArcReach technology uses existing weld cables to communicate process adjustment commands back to the engine-driven welder. With an ArcReach system, amperage & voltage are conveniently located at the operator's fingertips - not back at the power source.   Learn More
Cleaner and Stronger Auxiliary Power
Combined with a 25-horsepower engine, Trailblazer engine-driven welders offer up to 12,000 watts of clean, truly usable auxiliary power that is Accu-Rated™, not inflated: tested to deliver uninterrupted peak output for a minimum of 30 seconds for big loads, so you can get more jobs done. An independent welder and auxiliary power system ensures no interaction between jobsite tools and the welding arc, while advanced auxiliary power technology virtually eliminates power spikes and other electrical imperfections — so welds are cleaner and jobsite tools can run without interruption, maximizing quality, productivity and profit.
Fewer refueling trips
No other gas engine-driven welder in the 300-amp class lets your crews spend more time working and less time refueling — because only Trailblazer engine-driven welders provide Auto-Speed™ technology, plus Excel™ power and electronic fuel injection (EFI) options, to deliver maximum runtime.
Maximum cost savings
Less money spent on fuel means more profit for you. Every Miller Trailblazer engine-driven welder has fuel-saving Auto-Speed technology; add optional Excel power and Electronic Fuel Injection (EFI) to save even more on fuel costs and enjoy a combination of advanced, profit-enhancing features that are only available on a Trailblazer engine-driven welder.   Learn More
Safer, more productive jobsites
Quieter jobsites are safer and more productive because work crews can communicate easier, and work can start earlier and end later — even in noise-sensitive areas. If your jobsite requires welding/auxiliary power, it needs a Trailblazer engine-driven welder — because no other gas-fueled choice is as quiet.
More mobile, uses less truck and jobsite space
Trailblazer engine-driven welders are up to 17 percent smaller and 10 percent lighter then competitive machines — which means moving them is faster and easier, for maximum productivity. And because they take up less space, Trailblazer engine-driven welders let work trucks carry more equipment and gear — so your work crews can be ready for anything.

Not Included

  • Weld leads



Air Carbon Arc Cutting and Gouging (CAC-A)
Flux Cored (FCAW)
Stick (SMAW)
Plasma (PAC)

General Specifications

Title Trailblazer® 325 (Kohler), GFCI
Industries Interests Pipeline
Construction and Fabrication
Amperage 20 A - 325 A
Rated Carbon Diameter 3/16 in (4.8 mm)
Current Type DC
Portability Lift Eye (Standard)
Running Gear / Cart (Optional)
Trailer (Optional)
Engine Brand Kohler
Engine Idle Speed 2400 RPM
Engine Weld Speed Auto-Speed™ technology: 2400, 2800, 3200 or 3600 RPM
Fuel Tank Size 12 gal.
Fuel Type Gasoline
Horsepower 23.5 hp
Weld Output CC / CV
Single Phase Auxiliary Continuous Power 10500 W
Single Phase Auxiliary Peak Power 12000 W
Sound Rating Weld: 150 A load: 65 dB (90 Lwa), 325 A load: 73.5 dB (98.5 Lwa) Auxiliary power: 73.5 dB (98.5 Lwa)
Applications Fabrication
Net Width 20 in
Net Height 28 in
Net Length 45.5 in
Net Weight 488 lbs
Warranty 3 Years
Miller's True Blue Warranty