ArcReach welding technology minimises the non-value added time spent walking to and from the power source - and maximises arc-on time, weld quality and job site safety.

Auto Remote Sense™

Detects if a remote control is plugged into the 14-pin receptacle and eliminates the confusion of a remote/panel switch.

HD Powder Coat

Zinc-Rich primer protects sheet metal from rust and corrosion.

Infinite Arc Control

Allows the arc characteristics to be changed for specific applications in Stick, TIG, MIG and FCAW.

Lift-Arc Tig with Auto crater and Auto Stop

Lift-Arc TIG provides soft TIG arc starting without the use of high frequency, while Auto-Crater and Auto Stop eliminate tungsten and workpiece contamination.

Thermal Overload Protection

Prevents machine damage if the duty cycle is exceeded or airflow is blocked.

Digital Meters

SunVision technology enables welding parameters to be viewed with greater clarity than analogue meters at virtually any angle. Meters can be seen clearly even in direct sunlight.

Industrial USB Port

Quickly upload the latest software and download machine log files to retrieve in-depth information such
as diagnostics and machine statistics.

Remote Oil Drain

Prevents spills and makes servicing easy.

Arc Control

Beneficial when welding with a stick and solid wires for easier fine tuning of tough-to-weld materials and out-of-position applications.

Auxiliary Power*

  • 1 x 240 V 60 Hz 32 Amp 1 Phase Socket.
  • 2 x 240 V 60 Hz 15 Amp 1 Phase Socket.
  • RCD.

Generator auxiliary power is 60Hz and intended for operating equipment associated with weldings, such as angle grinders, drills and floodlights. Some Australian 50Hz equipment incorporating induction motors, such as pumps, fans, air compressors, refrigeration or air-conditioners, may not operate correctly and could be damaged. Refer to appliance supplier or manufacturer to confirm suitability.

Low OCV Stick (VRD)

Reduces the open-circuit voltage to 30 volts when the welding power source is not in use. This feature is now built into the Big Blue 400X Pro for increased operator safety without compromising arc starts.



SKU MR907732011-1
Model # MR907732011-1
Brand Miller
Shipping Weight 431.0000kg


  • Stick SMAW
  • RMD
  • Pulsed MIG GMAW-P
  • Flux-Cored FCAW
  • Air Carbon Arc CAC-A


  • Structural Steel
  • Process Piping
  • Mining Maintenance
  • Maintenance and Repair Rigs
  • Construction


Cold Weather Starting Aids Engine Block Heater
Glow Plugs
Engine Brand Kubota
Engine Compliance T4F
Engine Idle Speed 1500 RPM
Engine Weld Speed 1800 RPM
Fuel Tank Size 11.5 Gallons
Fuel Type Diesel
Horsepower 20.2 hp
Weldable Metals Steel
Stainless Steel
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
Single Phase Generator Continuous Power 10000 W
Single Phase Generator Peak Power 12000 W
Sound Rating Idle: 66 dB, Weld: 71.6 dB dB
Rated Carbon Diameter 3/16 in (4.8 mm)
Current Type DC
Max Open Circuit Voltage 85 VDC
Amperage Range 20 - 400
Portability Lift Eye (Standard)
Trailer (Optional)
Weld Output CC
Net Width 26.25 in
Net Height 32 in
Net Length 56 in
Net Weight 950 lbs

Miller True Blue 3 Year Warranty

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