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Miller Dimension™ 452 903255

$6,435.00 $8,264.30 Reduced Price You Save $1,829.30
Product Number: 903255
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Miller Dimension™ 452 230/460/575 V 903255

Designed for heavy industrial welding applications, the Miller® Dimension multiprocess applications welder allows you to complete all project sizes with a 100 percent duty cycle for an extended arc-on time. Complete any task in tough to build industries like Aerospace, to Railcar, to Shipbuilding with the 3-phase welding machine. The easy to use control panel allows you to easily switch from following processes: Air Carbon Arc Cutting and Gouging (CAC-A), Flux-Cored (FCAW), MIG (GMAW), Stick (SMAW), Submerged Arc (SAW) TIG (GTAW). The arc control panel built into the Miller Dimension™ 452 230/460/575 V 903255 further allows you to control the type and quality of welding necessary to get the job done the first time around.


  • Fabrication and Construction
  • Heavy Manufacturing
  • MRO — Maintenance/Repair
  • Pressure Tank/Vessel Fabrication
  • Pipe Welding
  • Shipbuilding
  • Refineries and Foundries
  • Railcar Manufacturing
  • Earth-Moving Equipment Manufacturing


  • MIG (GMAW)
  • Stick (SMAW)
  • TIG (GTAW)
  • Flux-cored (FCAW)
  • Air carbon arc (CAC-A)
    cutting and gouging
  • Submerged arc (SAW)

Electronic Engine Display (Kubota USA Models Only)

Simultaneously see and analyze diagnostics for quick and easy servicing like:

  • Fuel Level
  • Engine Hours
  • Coolant Temperature
  • Oil Pressure
  • Battery Volts
  • Engine RPM

Miller Dimension™ 452 230/460/575 V 903255:


DC multiprocess capability Provides versatility and outstanding arc performance in CV (MIG) and CC (stick, TIG, CAC-A).
Built-in arc control Lets you get in tight without sticking the electrode. An electrode compensation circuit ensures consistent arc control performance regardless of the electrode size.
Internal digital voltage control (DVC) Enables the operator to preset weld voltage in the CV mode prior to welding.
Line voltage compensation Ensures consistent weld performance by keeping output power constant even if primary input power varies by ±10 percent.
Hot Start™ Makes it easy to start difficult stick electrodes such as E-6010 and E-7018.
Power-efficient For exceptional value and return on your investment.
115-volt duplex receptacle Provides 15 amps of auxiliary power.
Thermal overload protection Helps prevent machine damage if the duty cycle is exceeded or airflow is blocked.
Power cord strain relief Provided for your convenience at installation.
Fan-On-Demand™ The cooling system operates only when needed. Reduces contaminants drawn into the machine and excess noise in work areas.
Digital voltmeter and ammeter are easy to read, even at 30 feet (9.2 m).
Simple control panel Features single range amperage/voltage adjustment. Provides easy and efficient operation.
14-pin receptacle Provides quick, direct connection to Miller 14-pin wire feeders and accessories.
Remote on/off capabilities Allows the operator to turn the power source on and off from a distance.
Remote voltage control Allows the operator to change the voltage from the feeder.
Enclosed circuit boards Provides additional protection from contaminants
resulting in a longer service life.
PC board protection Prevents the wire feeder power or other stray voltages (less than 115 VAC) from harming the power source PC board.



Welder/generator is warranted by Miller for three years, parts and labor. The engine is warranted separately by engine manufacturer.

View our large selection of multi-process welders, Miller welding machines, and welding machine accessories with the best prices online. 

Miller Dimension™ 452 Processes

  • Air Carbon Arc Cutting and Gouging (CAC-A)
  • Flux Cored (FCAW)
  • MIG (GMAW)
  • Stick (SMAW)
  • Submerged Arc (SAW)
  • TIG (GTAW)

Dimension™ 452 Specifications:

Industries Interests Aerospace
Heavy Equipment Manufacturing
Boat / Yacht
High Purity Processing
Current Type DC
Carbon Diameter 5/16 in (7.9 mm)
Input Voltage 220/230/240 V
460/480 V
Input Phase 3-Phase
Input Hz 60 Hz
Portability Lift Eye (Standard)
Running Gear / Cart (Optional)
Net Height 30 in
Net Length 38 in
Net Weight 424 lbs
Weldable Metals Aluminum
Specialty Metals
Stainless Steel
Net Width 23 in
Warranty 3 Years
Miller's True Blue Warranty


Height: 24.00 Inches
Width: 33.00 Inches
Length: 40.00 Inches
Weight: 449 Lb(s) 0 Oz

Miller Dimension™ 452 #903255 Welder Fan on Demand™ Feature


Miller Dimension™ 452 #903255 Welder Remote Control Feature


Miller Dimension™ 452 #903255 Welder Submerged Arc Feature

Product Questions and Answers

Q - Where can I get extension cables? A - Right here! These are the extension cables options for 14-Pin Plugs to 14-Pin Sockets: #242208025 is 25 ft, #242208050 is 50 ft., #242208080 is 80 ft.
Q - Is there a package for this that includes a wire feeder and gun? A - YEs, check out #951273, which includes an S-74D wire feeder, Bernard BTB Gun 400 A, flowmeter regulator and work cable with clamp.

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