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Miller Multimatic 255 Multiprocess Welder – 208-575V - 907728


The Miller Multimatic 255 multi-process welder is a robust machine built for professionals in the MRO and light manufacturing/fabrication segments who want a smaller, versatile welder with intuitive setup to increase efficiencies and productivity. This inverter multiprocess elder is easy to use, will deliver versatility for faster uptime and performance, while allowing for portability.

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Gtin 715959670890 SKU: 907728 Categories: , ,

Miller® Multimatic® 255 Multiprocess Welder 907728


The Miller® Multimatic® 255 multi-process welder is a 350 amp, portable welder that is capable of MIG, Pulsed MIG, Stick, DC TIG and DC Pulsed TIG welding. The Multimatic® 255 comes complete with full color seven inch LCD screen with Auto-Set™ Elite technology. Auto-Set™ Elite sets MIG, Stick and TIG welding parameters automatically, all you need to do is enter metal thickness and welding wire or tungsten electrode diameter. In addition to built-in welding programs, the 255 can also store your custom welding programs. It seamlessly switches between welding with standard MIG gun or optional Spoolmatic™ spool gun. The 255 also features direct plug for XR push-pull gun for professional aluminum wire feed capability. This allows you to use 12 inch spools of aluminum MIG wire instead of the more expensive 1 lb rolls used with the spool gun.


The Multimatic® 255 runs on 208 to 575 volt input power, using Miller’s Auto-Line™ technology that automatically detects input voltage. It comes complete with MIG welding gun, shielding gas regulator with hose, stick electrode holder and ground clamp. TIG welding kit is sold separately.




  • MIG (GMAW)
  • Pulsed MIG (GMAW-P
  • Stick (SMAW)
  • Flux Cored (FCAW)
  • DC Pulsed TIG (DC GTAW-P)




  • Multiprocess capabilities include MIG, flux cored, DC stick (6010) and DC Lift-Arc™ TIG welding. The Multimatic 255 also has pulsing capability that allows it to do pulsed MIG and TIG welding.
  • Intuitive color LCD user interface makes it quick and easy to adjust parameters.
  • Auto-Set? Elite offers predefined weld settings to increase ease of use and ensure that the job is done right for operators of all skill levels.
    Available for MIG, pulsed MIG, stick and DC TIG processes with the ability to fine-tune your settings.
    Set weld parameters by selecting:
    MIG (shown)?wire and gas type, wire diameter and material thickness
    Stick?electrode type, electrode diameter and material thickness
    DC Lift-Arc™ TIG?remote on/off, tungsten diameter and material thickness
  • Program mode allows easy save and recall of favorite weld settings.
    Save up to four programs for each process.
    Deliver more productivity by eliminating need to manually set parameters.
    Deliver consistent quality by welders of all skill levels with prequalified settings.
    Minimize supervisor intervention.
  • Compatible with push-pull MIG guns. Increases productivity by allowing the use of 12-inch wire spools versus a spool gun?s 4-inch spools. Reduces downtime from changing wire spools.
  • Auto-Gun Detect™ automatically adjusts voltage, wire speed and timers for faster switching between MIG, push-pull and spool guns.
  • Auto-Line™ allows for any single-phase input voltage hookup (208?575 V) with no manual linking, providing convenience in any job setting. Ideal solution for dirty or unreliable power.
  • Pulsed MIG welding delivers higher quality welds for ALL welders.
    Lower heat input for less distortion on thin materials and better puddle control on out-of-position welds.
    Less spatter minimizes post weld grinding and rework, allowing more welding time.
    Perform welding applications that couldn?t be done in the past.
    Ideal for MIG welding aluminum and stainless steel.

OPTIONAL TIG Kit – gives you everything you need for remote TIG welding with the Multimatic 255. Includes RFCS-14HD remote foot control, 10-Pin to 14-Pin adapter cord, 25 ft. Weldcraft® 150-amp WP17 TIG torch with 50-mm Dinse connector, AK-2 torch accessory kit, regulator and gas hose.







This is a DC only machine. It cannot TIG weld Aluminum



Comes complete with


  • Multimatic® 255 multi-process welder with 10 ft. (3 m) industrial power cord
  • 15 ft. (4.5 m) 250-amp MDX™-250 MIG gun with Bernard® AccuLock™ S consumables for .035/.045 in. (0.9/1.2 mm) wire
  • 10 ft. (3 m) cable with electrode holder and 50 mm Dinse-style connector
  • 10 ft. (3 m) work cable with clamp and 50 mm Dinse-style connector
  • Flow gauge regulator and gas hose for argon or AR/CO2 mix
  • .035/.045 in. (0.9/1.2 mm) reversible drive rolls
  • Extra contact tips
  • Material thickness gauge
  • Power source with 10 ft. (3 m) power cord
  • 15 ft. (4.5 m) 250-amp MDX™-250 MIG gun w/ Bernard® AccuLock™ S consumables for .035/.045 in. (0.9/1.2 mm) wire
  • 10 ft. (3 m) cable w/electrode holder & 50 mm Dinse-style connector
  • 10 ft. (3 m) work cable w/clamp & 50 mm Dinse-style connector
  • Flow gauge regulator and gas hose for argon or AR/CO2 mix
  • Extra contact tips
  • .035/.045 in. (0.9/1.2 mm) reversible drive rolls
  • Material thickness gauge


Aluminum Welding
Flux Cored (FCAW)
Pulsed MIG (GMAW-P)
Pulsed TIG (GTAW-P)
Stick (SMAW)


Title Multimatic® 255 Multiprocess Welder – 208-575V
Weldable Metals Steel
Stainless Steel
Input Voltage 208 V
220/230/240 V
460/480 V
575 V
Input Phase 1-Phase
Input Hz 50 / 60 Hz
Input Amperage 34.7
Current Type DC
Max Open Circuit Voltage 81 VDC
Wire Feed Speed 50 IPM – 800 IPM
Portability Handle(s)
Running Gear / Cart (Optional)
Weld Output CC / CV
Warranty 3 Years
Miller’s True Blue Warranty
Gtin 715959670890 SKU: 907728 Categories: , ,