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907733001 - Miller Big Blue 400 Pro Mitsubishi Diesel Welder with ArcReach

Packaging: 1 PER EA
$39,293.84/ea $32,821.00/1 PER EA only $32,821.00/eaSave 16%

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OVERVIEW

Miller Big Blue 400 Pro (Mitsubishi) Diesel Welder with ArcReach

The Miller Big Blue 400 Pro (907733001) is a powerhouse engine-driven welder designed for the most demanding industrial applications. Powered by a heavy-duty, low-speed Mitsubishi S4L2 diesel engine, this machine is built to run for 10,000 hours before requiring a major overhaul, ensuring long-term reliability and return on investment. It delivers a robust 400 amps of welding output at 100% duty cycle, making it capable of handling heavy structural steel, pipe fabrication, and maintenance jobs with ease.

One of the standout features of this model is the integrated ArcReach technology. This innovation allows welding operators to adjust process parameters remotely using the wire feeder or remote control, communicating directly through the weld leads. This eliminates the need for fragile and expensive control cables, reduces trip hazards on the job site, and saves valuable time by preventing unnecessary walks back to the power source. Whether you are working on a high-rise structure or a cross-country pipeline, ArcReach keeps you welding longer.

In addition to its welding capabilities, the Big Blue 400 Pro serves as a powerful generator, providing 12,000 watts of peak auxiliary power. This allows you to run grinders, lights, and other job site tools simultaneously without compromising arc performance. The unit also features a digital interface with SunVision technology, ensuring that meters are readable even in direct sunlight, and an industrial USB port for easy software updates and diagnostics.

Key Features:

  • Mitsubishi S4L2 Engine: A 24.7 HP, 4-cylinder liquid-cooled diesel engine known for durability and fuel efficiency.
  • ArcReach Technology: Full remote control capability without extra control cords.
  • Quiet Operation: Operates at just 72.1 dB while welding, improving job site communication and safety.
  • HD Powder Coat: Zinc-rich primer and powder coat finish provide superior resistance to rust and corrosion.
Additional Information
Amperage:400
Brand:Miller
Duty Cycle:100%
Watts:12000 W
Weld Process:Engine Drive
Engine Brand:Mitsubishi
Engine Model:S4L2
Fuel Type:Diesel
Auxiliary Power:12,000 Watts Peak, 10,000 Watts Continuous
Output Range:20 - 400 A
Weld Output:400 A at 24 V (100% Duty Cycle)
Dimensions:32 in (H) x 26.25 in (W) x 56 in (D)
Net Weight:993 lbs
Packaging Description:1 PER EA
Voltage:n/a

INCLUDED

  • Big Blue 400 Pro (Mitsubishi) ArcReach Power Source
  • Owner's Manual

APPLICATIONS

  • Construction
  • Structural Steel
  • Maintenance and Repair
  • Pipe Fabrication
  • Cross-Country Pipeline
  • Mechanical Contracting
  • Fabrication

FAQ

ArcReach allows communication between the power source and wire feeder or remote using existing weld cables, eliminating the need for separate control cords.

This specific model is equipped with a Mitsubishi S4L2 4-cylinder liquid-cooled industrial diesel engine.

The machine provides 12,000 watts of peak single-phase power and 10,000 watts of continuous power for tools and lighting.

Yes, it is rated for 3/16-inch carbons and is capable of handling up to 1/4-inch carbons.

No, this SKU is for the power source only. Welding leads, wire feeders, and other accessories must be purchased separately.

Dynamic DIG is a Miller-exclusive technology that automatically adjusts current to clear shorts, providing a smoother and more consistent Stick welding arc.

Yes, the Mitsubishi S4L2 engine meets EPA Tier 4 Final emission standards.

It has a rated output of 400 Amps at 24 Volts with a 100% duty cycle.

CATALOGUE & SPEC SHEETS

Spec Sheet