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Millermatic® 255
MIG Welder

TOMAG Enterprises Limited is the Authorized Agent and Distributor of Miller Welding® in the East African Region.

Millermatic® 255 MIG Welder Front - Tomag Enterprises LimitedMillermatic® 255 MIG Welder Front - Tomag Enterprises Limited
Millermatic® 255 MIG Welder Back - Tomag Enterprises LimitedMillermatic® 255 MIG Welder Back - Tomag Enterprises Limited

Millermatic® 255 MIG Welder

Easy to use machine to increase efficiency and productivity for the light manufacturing and fabrication users. Color screen featuring Auto-Set™ Elite and Pulsed MIG. This all-in-one welder connects to 208 or 240 volt input power. Welds up to 1/2” aluminum.

Easy-to-understand interface
7-inch color LCD display ensures proper machine setup and parameter selection, reducing setup time and increasing weld time.
Pulsed MIG welding delivers higher quality
Lower heat input for less distortion on thin materials, less spatter minimizes post weld grinding and rework allowing more welding time. Perform welding applications that couldn’t be done in the past.
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.
Program mode allows easy save and recall of favorite weld settings
Deliver more productivity, consistent quality by welders of all skill levels by using prequalified weld settings. Minimize supervisor need to intervene.
Auto-Line™ Technology
For portability and reliability, this inverter power supply allows for any single-phase input voltage hookup (208–240 V) with no manual linking, providing convenience in any job setting. Ideal solution for dirty or unreliable power.
Capabilities include MIG, pulsed MIG and flux-cored welding.
MDX-250 MIG Gun w/ AccuLock™ S consumables
AccuLock liner loads from the front and locks at the front and back to insure proper alignment for flawless wire feed path. New rubber overmold and ball -and-socket handle design improves grip and reduces welder fatigue. New Industrial Bernard AccuLock™ S contact tips provide superior Spray and Pulsed MIG arc performance
Portability – Machine only weighs 84 lb
Weight is reduced by more than 50 percent compared to the Millermatic 252.
EZ-Latch™ running gear
Operators no longer need to use lift truck to load machine and running gear into the truck. Latches secure machine to running gear. Simply loosen the latch retaining knob and rotate latches to disengage machine from running gear for easy portability.


TitleMillermatic® 255 MIG/Pulsed MIG Welder w/ EZ-Latch™ Running Gear- 208/240V
Material ThicknessAluminum 18 ga. (1.02 mm) – 1/2 (13mm)
Mild Steel 24 ga. (.51 mm) – 1/2 (13mm)
Weldable MetalsAluminum
Stainless Steel
Input Voltage208 V
220/230/240 V
Input Phase1-Phase
Input Hz60 Hz
Input Amperage20-350
Current TypeDC
Rated Output230 A at 25.5 V, 60% duty cycle
Max Open Circuit Voltage87 VDC
Wire Feed Speed50 IPM – 800 IPM
Wire DiameterAluminum 0.035 in 0.047 in
Flux Cored 0.03 in 0.045 in
Stainless 0.023 in 0.045 in
Solid Steel 0.023 in 0.045 in
Spool Size12 in (305 mm)
Weld OutputCV
Warranty3 Years
Miller’s True Blue Warranty