Miller XMT® 450

Exceptionally smooth & precise arc


Portability and excellent arc performance.

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 provides arc starting that minimizes contamination of the electrode and without the use of high frequency.

Where to Buy

Product Overview


  • Truck and Trailer Manufacturing
  • Shipbuilding
  • Repair Shops
  • Rental Fleets
  • Railroad
  • Power Generation Plants
  • Fabrication
  • Construction

What's In The Box

  • XMT 450 Machine
  • 3 metre Power Cord
  • with Jack Plugs


For details, refer to the Miller warranty statement.

Wind Tunnel Technology™

Protects electrical components and PC boards from contamination.


The cooling system operates only when needed, reducing noise, energy use and the amount of contaminants pulled through machine.


Allows TIG starting without the use of high-frequency. Starts the arc without contaminating the weld with tungsten.

Adaptive Hot Start™

Increases the output Amperage at the start of a weld if necessary, eliminating electrode sticking.

Large, Dual Digital Meters

Easy to view and can be pre-set.

Process Selector Switch

Reduces the number of control setup combinations without reducing any features.

Pulsed MIG (Gmaw-P) Capabilities

With optional Optima™ control reduces spatter and distortion, allows better out-of-position puddle control, and provides potential reduction of fume particle emission.

Line Voltage Compensation

Keeps welding output constant even if input power varies by ±10%.

Lightweight, Aerospace-Grade Aluminium Case

Offers heavy-duty protection with the benefit of reduced weight.

Inverter Arc Control Technology

Provides greater puddle control for superior 6010 Stick electrode performance, and outstanding MIG weld performance.



  • MIG
  • Stick
  • TIG
  • Gouging
  • 3 Phase
  • Input Voltage
    220/230/240 V
    460/480 V
  • Input Hz
    60 Hz
  • Input Amperage
    3 Phase – 230 V (51 A), 460 V (27.6 A)
  • Current Type
    CC / CV
  • Max Open Circuit Voltage
    90 VDC
  • Weld Output
    CC / CV
  • Dimensions (mm)
    H: 438
    W: 368
    D: 689
  • Weight

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