Miller Multimatic 255 Multiprocess Welder 907728

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Miller Multimatic 255 Multiprocess Welder 907728

The Miller Multimatic® 255 multi-process welder is a 350 amp portable welder. It is capable of DC Pulsed TIG, DC TIG, Stick, MIG and Pulsed MIG welding. This welder comes with a 7 inch LCD screen display with Auto-Set™ Elite technology capable of setting TIG, Stick and MIG parameters requiring only the metal thickness and welding wire or tungsten electrode diameter. The 255 also is capable of storing your custom welding programs, effortlessly switching between welding with a standard MIG gun or an optional Spoolmatic™ spool gun. It also includes direct plug for XR push-pull gun for professional wire feed.

Running on 208-575 volt input power, the Miller Multimatic® 255 uses Millers Auto-Line technology to automatically detect input voltage. The 255 comes complete with:

  • 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

Versatility

Multiprocess Capabilities of MIG, Pulsed MIG, Stick (6010), DC Lift Arc TIG and DC Pulsed TIG

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.

The 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.

MDX-250 MIG Gun w/ AccuLock™ S consumables

AccuLock liner loads from the front and locks at the front and back to ensure 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 transformer welding machines. A lighter machine allows for increased mobility to those hard to access spots. 

Optional 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

NOT INCLUDED

  • Shielding gas (for welding with solid wire [GMAW])
  • lux cored drive rolls (for welding with flux cored wire [FCAW])
  • Push-Pull Gun (for welding aluminum)
  • Spool Gun (for welding aluminum)
  • Welding Wire
  • Personal safety products (helmet, gloves)
View our entire selection of welding machinesMulti-Process Welders, welders accessories, and welding helmets available at Welders Supply Company.
Title
  • Multimatic® 255 Multiprocess Welder - 208-575V
Weldable Metals
  • Steel
  • Stainless Steel
  • Aluminum
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
Weld Output
  • CC / CV

SHIPPING DIMENSIONS

Height: 23.00 Inches
Width: 17.50 Inches
Length: 30.00 Inches
Weight: 105 Lb(s) 0 Oz

Product Questions and Answers


Q - Can a MIG gun and TIG torch be connected at the same time? A - Yes.
Q - Will this work with 6010 electrodes? A - Yes, no problem.

How to connect 1-phase input power:

  1. See rating label.

    See rating label on unit and check input voltage available at site.

  2. Wire receptacle.

    Wire receptacle according to the direct connection method stated below and as shown, and connect plug to receptacle or direct connect power.

  3. Connect grounding conductor.

    Connect green or green/yellow grounding conductor to disconnect device grounding terminal first.

  4. Connect input conductors.

    Connect input conductors L1 and L2 to disconnect device line terminals.

  5. Select over-current protection.

    Select type and size of over-current protection useing Section 5-2.

  6. Connect plug.

    Connect plug to receptacle if hard wiring method is not used.

  7. Secure door on disconnect device.

    Close and secure door on disconnect device. Follow established lockout/tagout procedures to put unit in service.

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