Miller Big Blue® 400 Pro (Kubota) - 907732

The Miller Big Blue 400 Pro uses a robust low-speed Kubota V1505 Industrial Diesel Engine. Designed for industrial use, this engine delivers quiet operation, enhancing safety and communication at the work site. Crafted with the professional in mind, the Big Blue 400 Pro is the best for ease of use, reliability and fuel economy.

Digital Meters with SunVision™

These meters are highly visible even in direct sunlight, ensuring you can monitor performance easily.

Industrial USB Port

Effortlessly upload the latest software and download machine logs.

Auto Remote Sense™ (ARS)

This feature detects when a remote control is connected to the 14-pin receptacle, eliminating any confusion over remote and panel switches.

User-Friendly Controls

Our system is designed for simplicity—just select the process and start welding without any complex procedures!

HD Powder Coat Finish

Engineered for professional welders, this durable finish withstands tough conditions.

Advanced Welding Features

• Adaptive Hot Start™: Facilitates easy starting of stick electrodes while preventing inclusions.
• Infinite Arc Control: Available in Stick and Wire modes, allowing precise adjustments for challenging materials and out-of-position applications.
• Lift-Arc™ TIG: Starts the arc without high frequency, reducing the risk of electrode or workpiece contamination.
• Low Open Circuit Voltage Stick (VRD): When activated, this feature lowers the open-circuit voltage to 15 volts when the machine is inactive, enhancing operator safety without compromising the ability to initiate an arc.

 

Significant improvements in sound level and quality offer better jobsite communication, which provides a safer, more efficient working environment for you and your crew. New Big Blue welder/generators have rotated the engine toward the front to create more efficient airflow, resulting in significantly quieter operation. Up to 33% sound reduction!

Miller welder/generators are the most rugged, durable and long-lasting in the industry. We manufacture them to exceed requirements for extreme working conditions and they are hard-working from the core: 

• Copper windings and iron generator components for a quality-built machine
• Lugged- not soldered - heavy internal leads for better field durability 
• Superior cooling technology for maximum performance and engine life
• Super-tough armor to protect the welder/generator from accidental impact
• Protective armor doors to cover the weld studs and receptacles as required by OSHA and CSA for job site safety
• Lift hook integrated into the center frame, which bolts to the machines base for durability 
• Long runtimes provide many hours of use before refueling is needed

Easier Maintenance

Front panel maintenance displays, so you know when your equipment needs to be serviced. 

• Oil checks can be performed from the top by the front panel
• Tool less panels allow for quick access
• Single-sided fuel fill and oil drain/filter 

Smooth Power - Better Performance

Revolutionary ten-degree skewed-rotor design optimizes generator performance for smoother power- rather than spiked power you might see in competitive units.

Reversed Generator Airflow

The engine is rotated towards the front to create more efficient air flow.