Millermatic® 255 MIG/Pulse MIG Welder w/ Dual Cylinder EZ-Latch™ Running Gear- 208/240V

Millermatic® 255 MIG/Pulse MIG Welder w/ Dual Cylinder EZ-Latch™ Running Gear- 208/240V

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.

Autobody Package only system for Silicon Bronze, Aluminum & Steel.

Single Cylinder Running Gear Package

Machine Only

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What's Included

  • Power source with 10 ft. (3 m) industrial power cord
  • 15 ft. (4.5 m) 250-amp MDX™-250 MIG gun w/Bernard® AccuLock™ MDX consumables for .030/.035 in. (0.8/0.9 mm) steel wire
  • Bernard® Q200 12 ft (3.7m) MIG gun with extra Centerfire™ contact tips for aluminum wire
  • 10 ft MDX™-100 MIG Welding Gun w/Bernard® AccuLock™ MDX consumables for .035 in. (.9 mm) Silicon Bronze wire
  • 10 ft. (3 m) work cable w/clamp & 50 mm Dinse-style connector
  • 2 Flow gauge regulator and gas hose for argon or AR/CO2 mix
  • .030/.035 in. (0.8/0.9 mm) reversible drive rolls
  • .035/.047 in. (0.9-1.2mm) reversible U-Grooved drive rolls
  • Extra contact tips
  • Material Thickness Gauge
  • 8 in 10 lb .030 Steel wire spool
  • 8 in, 5 lb .047 5554 Aluminum wire spool
  • 8 in 10 lb .035 Silicon Bronze wire spool
  • Two chains to secure gas cylinders
  • Protective Cover
  • Quick Reference Setup Guide
MDX-250 MIG Gun w/ AccuLock™ MDX 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™ MDX contact tips p[rovide superior MIG and Pulsed MIG arc performance.
Capable of MIG, Pulsed MIG welding for any steel, Silicon Bronze or Aluminum application
Easy-to-understand interface
7-inch color LCD display ensures proper machine setup and parameter selection, reducing setup time and increasing weld time
Auto-Line™ Technology
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.
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.
EZ-Latch™ Dual Cylinder Rack with Elevated Gun and Cable Rack
Dual cylinder rack and storage compartment. Allows operator to easily store two gas cylinders. Includes elevated gun and cable rack to keep cables off the floor and tangle free.

Not Included

  • Shielding gas (for welding with solid wire [GMAW])
  • Personal safety products (helmet, gloves)


General Specifications

Title Millermatic® 255 MIG/Pulse MIG Welder w/ Dual Cylinder EZ-Latch™ Running Gear- 208/240V
Material Thickness Mild Steel 24 ga. (.51 mm) - 1/2 (13 mm)
Aluminum 18 ga. (1.02 mm) - 1/2 (13 mm)
Input Voltage 208 V
220/230/240 V
Input Phase 1-Phase
Input Hz 50/60 Hz
Current Type DC
Rated Output 230 A at 25.5 V, 60% duty cycle
Amperage Range 20 A - 350 A
Wire Feed Speed IPM Range 50 IPM - 800 IPM
Wire Diameter Solid Steel 0.023 in - 0.045 in
Stainless Steel 0.023 in
Flux Cored 0.03 in - 0.045 in
Aluminum 0.035 in - 0.047 in
Spool Size 12 in (305 mm)
Warranty 3 Years
Miller's True Blue Warranty



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