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Designed with the professional in mind, the Big Blue 400 Pro is the best for ease of use, reliability and fuel economy.

Features

  • All painted sheet metal is pretreated with a zinc-rich primer to provide extra protection against rust & corrosion (comparable to stainless steel).
  • Quickly upload the latest software and download machine log files to retrieve in-depth information such as diagnostics and machine statistics.
  • Requires no elaborate procedure - just select process and weld.
  • Used in industrial applications around the world, the S4L2 is designed to run 10,000 hours before major overhaul. Backed by worldwide support and service.
  • Enables welding parameters to be viewed with greater clarity at virtually any angle. Meters can be seen clearly even in direct sunlight.
  • When activated, reduces the open-circuit voltage to 15 volts when the power source is not in use, increasing operator safety without compromising arc starts.
  • Output contactor control, automatic idle, thermal overload protection, and 120-volt engine block heater.
  • Improves work site safety and communication.
  • Adaptive Hot Start™ makes starting stick electrodes easy without creating an inclusion. Infinite arc control available in the Stick and Wire modes for easier fine tuning of tough-to-weld materials and out-of-position applications. Lift-Arc™ TIG provides arc starting that minimizes the risk of electrode/work contamination without the need for high frequency.
  • Enables unit to automatically use remote control if connected to remote control receptacle.
  • Unlike conventional DIG that provides a preset amount of short-clearing current, Miller’s proprietary Dynamic DIG works on a time-based algorithm that automatically adjusts the amount of current required to clear a short. What does this mean? A smoother more consistent arc that can be tailored to match application, material, fit-up, and welder technique.

Does Not Include

  • Weld leads
  • Max DC Welding Amperage: 400 A
  • Amperage Range: 20 A - 400 A
  • Fuel Tank Size: 11.5 gal.
  • Rated Output: 400 A at 24 V, 100% Duty Cycle; 350 A at 27 V, 100% Duty Cycle; 300 A at 32 V, 100% Duty Cycle
  • Sound Rating: Idle: 68.7 dB, Weld: 72.1 dB
  • Fuel Type: Diesel
  • Single-Phase Generator Peak Power: 12000 W
  • Length: 56 in.
  • Height: 32 in.
  • Weight: 993 lb
  • Rated Carbon Diameter: 1/4 in (6.4 mm)
  • Country of Origin: United States
  • Weld Output: CC / CV
  • Width: 26.25 in.
  • Engine Weld Speed: 1800 RPM
  • Max Open Circuit Voltage: 85 VDC
  • Horsepower: 24.7 hp
  • Engine Compliance: T4F
  • Engine Idle Speed: 1500 RPM
  • Current Type: DC
  • Weldable Metals: Stainless Steel, Steel
  • Cold Weather Starting Aids: Engine Block Heater, Glow Plugs
  • Single-Phase Generator Continuous Power: 10000 W
  • Engine Brand: Mitsubishi

Downloads

    CSA Cert
    Spec Sheet