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West Country Welding Supplies

Miller XMT 350 - West Country Welding Supplies, UK - West Country Welding Supplies, UK

Miller XMT 350

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All Miller machines come with Miller True Blue three year warranty.

Miller XMT 350Outstanding multiprocess inverters with built-in features providing the ultimate in productivity. Auto-Line provides link-free primary power operation. Available in three versions. The full version XMT 350 CC/CV, XMT 350 MPa with built in Pulse MIG, and the XMT 350 VS which is ideal for voltage sensing feeder work.

New! XMT® 350 MPa expands the process capability ot the XMT Series, with built-in Pulsed MIG operation. MPa stands for MIG, Pulse, advanced arc control. The advanced arc control provides:

  • Improved pulsed MIG welding.
  • More control over the puddle and weld bead using SharpArc™.
  • More robust and stable arc at very low arc lengths.
  • Reduces heat input
  • Welds on a wider range of material thicknesses.

Sharp Arc™ on the XMT 350 MPa:

  • Can handle virtually any welding job, including those hard-to-weld alloys found at power generation plants and shipbuilding facilities.
  • A low setting gives a more fluid puddle and a flatter bead appearance.
  • A high setting gives a less fluid puddle and a ropier bead appearance.
  • Can be adjusted to help customize the arc for the type of shielding gas being used.

The XMT 350 CC/CV is the cornerstone of the XMT family, packed with DC weld processes, outstanding arc characteristics, and features that make it the benchmark for inverter welding machine reliability.

The XMT 350 VS is a simplified version of the full featured 350 CC/CV model and is ideal for Construction or Fabrication applications utilizing voltage sensing wire feeders without remote control. Providing true "CV" MIG welding capability and superior "CC" Stick and TIG welding capability.

Main Features

  • Auto-Line™ Power Management technology allows for any input voltage hook-up (208-575V) with no manual linking, providing convenience in any job setting. Ideal solution for dirty or unreliable input power.
  • 350 amps of welding output at 60% duty cycle enables improved deposition through using larger diameter electrodes common in construction applications.
  • Tweco-style output connectors provided standard on the XMT-350 VS. Eliminates the need for cable adapters at the construction site.
  • Power factor of .95 enables smaller fuses/breakers and primary wiring. Primary amperage draw at rated output is 25% less than the competition.
  • Exceptional electrical efficiency. At 400 amps, efficiency is 87.24%, this helps to reduce the utility bill or fuel supply required to weld.
  • Inverter arc control technology provides greater puddle control for superior 6010 Stick electrode performance.
  • Auto Remote Sense enables unit to automatically use remote control if connected to remote control receptacle (CC/CV models only).
  • Reduced OCV operation - an internal dip switch enables reduced open-circuit voltage Stick welding capability. OCV is typically below 15 volts.
  • Process selector switch reduces the number of control setup combinations without reducing any features.
  • Large, dual digital meters are easy to view and presettable to ease setting weld output.
  • Pulsed MIG capabilities with optional Optima™ control reduces spatter and distortion, allows better out-of-position puddle control, and provides potential reduction of fume particle emission. (Not available on XMT 350 VS)
  • Lightweight, aerospace-grade aluminum case offers protection with the benefit of reduced weight.
  • Optional 115 VAC auxiliary power provides 10 amps of circuit-breaker-protected power for water circulators, etc. (Not available on XMT 350 VS)
  • Optional gas solenoid for TIG welding.
  • Fan-On-Demand™ operates only when needed reducing noise, power consumption, and the amount of airborne contaminants pulled through the machine.
  • Lift-Arc™ start provides TIG arc starting without the use of high frequency.
  • Wind Tunnel Technology™ Internal air flow that protects electrical components and PC boards from dirt, dust, debris... greatly improving reliability.
  • Adaptive Hot Start™ for Stick Automatically increases output amperage at the start of a weld should the start require it and prevents the electrode from sticking and creating an inclusion.
  • LVC™ Line Voltage Compensation Keeps output of the power source constant regardless of fluctuation in input power ± 10%.
  • Drop-Down Panel Easy-to-use controls are "under the cover" of the XMT 350 CC/CV and XMT 350 VS.


  • MIG (GMAW)/Pulsed MIG (GMAW-P)*
  • Stick (SMAW)
  • Flux Cored (FCAW)
  • Air Carbon Arc (CAC-A) Cutting and Gouging
  • XMT 350 MPa; XMT 350 CC/CV with required optional control; not available with XMT 350 VS model.


  • Manufacturing Industrial
  • Construction
  • Shipbuilding
  • Railroad
  • Truck and Trailer Manufacturing
  • Fabrication
  • Repair Shops
  • Rental Fleets


Input Power

  • Requires 3- or 1-phase power

Rated Output

  • 350A at 34VDC, 60% Duty Cycle, 3- Phase
  • 300A at 32VDC, 60% Duty Cycle, 1- Phase

Welding Amperage Range

  • 5 - 425 A, in CC mode
  • 10 - 38 V, in CV mode

Net Weight

  • 80 lb (36.6 kg)

Contact us for more details or to discuss any of your welding needs

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