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Miller XMT 350 FieldPro Multiprocess

Miller XMT 350 FieldPro Multi Process Welder

Top Features

  • DC CC CV
  • Miller ArcReach Technology
  • Cable Length Compensation (CLC)
  • Adjust While Welding (AWW)
  • Processes: Stick (SMAW), TIG (GTAW), MIG (GMAW), Pulsed MIG, Air Carbon Arc Cutting, Flux-Cored (FCAW) , RMD

Miller ArcReach welding technology minimizes downtime spent walking to and from the power source and maximizes arc-on time, weld quality and jobsite safety.

Product Details


Product Number: 907730
Voltage Range in CV Mode: 10–38 V
Amperage Range in CC Mode: 5–425 A
Rated Output: 3 Ph: 350 A at 34 VDC, 60% duty cycle
1 Ph: 300 A at 32 VDC, 60% duty cycle
Amps Input at Rated Output, 60 Hz:
  208V 230V 400V 460V 575V
3 Ph: 40.4   36.1   20.6   17.8   14.1  
1 Ph: 60.8   54.6   29.7   24.5   19.9  
KVA: 3 Ph: 14.2
1 Ph: 11.7
KW: 3 Ph: 13.6
1 Ph: 11.2
Max. Open-Circuit Voltage: 75 VDC
Dimensions: H: 17" (432 mm) x W: 12.5" (318 mm) x D: 24" (610 mm)
Net Weight: 93 lb (42.2 kg)


Stick (SMAW)



Pulsed MIG

Air Carbon Arc Cutting

Flux-Cored (FCAW)


Additional Features

ArcReach Technology
ArcReach capabilities increase jobsite productivity and efficiency by eliminating the time spent tracing weld cables hundreds of feet back to the power source because weld operators can make voltage adjustments at the ArcReach wire feeder or remote.

Cable Length Compensation
Cable Length Compensation (CLC™) ensures that the voltage a weld operator sets is the voltage they get by automatically adjusting voltage based on weld cable length, even hundreds of feet away from the power source (available only with XMT 350 FieldPro Systems).

Exceptional Arc Performance
XMT 350 FieldPro systems maximize weld quality, reduce training time and minimize weld defects even while using weld cables that are hundreds of feet long.

Increased Uptime
XMT 350 FieldPro welders and ArcReach accessories have been extensively field-proven and deliver the performance you need with ruggedly constructed internal components and Wind Tunnel Technology™.

Improved Jobsite Safety
The chances of slip, trip and fall injuries are decreased because ArcReach technology allows weld operators to make parameter changes at the wire feeder or remote instead of having to travel through multistory and cluttered jobsites back to the power source.

Maximum Fleet Compatibility
Maximize fleet compatibility and get the benefits of ArcReach when you pair XMT 350 FieldPro welders and ArcReach feeders with other ArcReach compatible products.

Adjust While Welding
Weld operators have more control and can Adjust While Welding (AWW™) to make fast, easy weld parameter changes at the wire feeder or remote — even while the arc is on. Only Miller offers this advanced solution (available only with XMT 350 FieldPro Systems).

Control Panel Lock Out
Inadvertent parameter changes by other jobsite workers can be avoided because connecting an ArcReach accessory to the power source automatically locks out the power source’s panel controls.

Auto-Process Select
Decrease the chance of an incorrect weld process being used because Auto-Process Select automatically sets the power source to the correct weld process based on the polarity applied to the weld accessory.

Auto-Line Technology
Work in more places with Auto-Line technology which automatically calibrates the power source to operate properly when connected to any primary input voltage ranging from 208-575 volts, single- or three-phase, 50 or 60 Hz — with no manual linking required.

All Product Resources


Miller XMT 350 FieldPro Multiprocess

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Airgas, an Air Liquide company, is the nation's leading single-source supplier of gases, welding and safety products. Known locally nationwide, our distribution network serves more than one million customers of all sizes with a broad offering of top-quality products and unmatched expertise.