Miller Packs Big Blue® Reliability/Quality into Compact 300-Amp Welder Generator

Highlights/Key Facts:

  • Available with CAT, Perkins or Deutz diesel engines.
  • Uses Miller “Vault” to protect critical components from dust and moisture.
  • 12kW of generator power and 20- to 410-amps CC/DC and 14- to 40-V CV/DC welding output.
  • Arc performance to meet the most demanding applications.

APPLETON, Wis., February 10, 2010—Miller Electric Mfg. Co. introduces the Big Blue® 300 Pro CC/CV engine driven welder generator. With 12kW of generator power and a 20- to 410-amp welding output, the Big Blue 300 Pro provides superior arc performance and stability along with extreme durability for reliable operation in the most demanding conditions. Ideal for pipe and construction contractors as well as MRO and fabrication professionals, the Big Blue Pro 300 is available with CAT, Deutz or Perkins diesel engines for excellent low-speed (1800 rpm) operation, fuel efficiency and low sound levels (71 dba at maximum output).  

As with all Big Blue models, the Big Blue Pro 300’s circuit board is protected by Miller’s “Vault”, a hermetically sealed aluminum case that is impenetrable to dust, salt and moisture. In addition, to ensure superior performance and reliability even in high heat applications, Miller rates its engine drives at 104 degrees F.

With excellent arc performance in all processes (TIG, Stick, MIG, flux cored, and carbon arc gouging), the Big Blue 300 Pro features improved arc starts and stability over its predecessor, the Pro 300. In addition, the Big Blue 300 Pro provides tailored arc control (DIG), which allows the operator to change arc characteristics for specific applications and electrodes, such as 7018 and 6010. 

Product Manager Quote:

“With the Big Blue 300 Pro, Miller brings the Big Blue reputation for quality and reliability to a 300-amp machine that provides the arc quality desired by the most demanding welders.”

Joe Gitter, product manager, Miller Electric Mfg. Co.


Miller Engine Drive Selection page:

Big Blue Pro 300 page: 

Additional Information

Weighing only 1,100 lbs. with CAT or Perkins engines, and 1,208 lbs. with a Deutz engine, the Big Blue 300 Pro’s compact size (32-in. x 26.25-in. x 56-in.) allows it to fit sideways in a standard pickup truck’s bed, leaving extra room for tools and supplies. The Big Blue 300 Pro features a low fuel shutdown that will shut down the engine before it runs out of fuel to make restarting easy and eliminating the need to re-prime the engine. High temperature and low oil pressure shutdowns protect the engine, while hour- and oil- change-interval meters make it easier to track maintenance requirements.

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