Miller XMT® 350

Proven performance in portable multi-process inverter applications


Flexibility and simplicity with excellent arc performance.

Portable and versatile for applications from the jobsite to the factory floor.

High quality performance in all welding processes.

Features Miller’s Auto-Line™ technology.

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 350 Power Source


For details, refer to the Miller warranty statement.

Auto-Line™ Power Management

Automatically compensates for various input Voltage. Suits jobsite and generator power. Keeps welding output constant even if input power varies by +/- 10%.

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.

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.

Process Selector Switch

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

Large, Dual Digital Meters

Easy to view and can be pre-set.

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



  • MIG
  • Stick
  • TIG
  • Gouging
  • 3 Phase
  • Input Voltage
    208 V
    220/230/240 V
    380/400/440 V
    460/480 V
    575 V
  • Input Hz
    50 / 60 Hz
  • Input Amperage
    208 V (40.4 A)
    230 V (36.1 A)
    400 V (20.6 A)
    460 V (17.8 A)
    575 V (14.1 A)
  • Weld Output
    CC / CV
  • Dimensions (mm)
    H: 432
    W: 318
    D: 610
  • Weight
    36.3 kg

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