Miller Multimatic 255 Multiprocess Welder – 208–575V

Miller Multimatic 255 Multiprocess Welder – 208–575V

907728

The Miller Multimatic 255 is a professional single-phase multiprocess welder designed for fabrication, plant maintenance, contract welding and training environments. Stock number 907728 is the machine-only package with Auto-Line input from 208 through 575 volts.

The Multimatic 255 supports MIG, pulsed MIG, flux-cored, DC Stick, DC Lift-Arc TIG and pulsed TIG welding. Rated output is 230 amps at 25.5 volts at 60% duty cycle for MIG, 200 amps at 28 volts at 60% for Stick and 275 amps at 21 volts at 60% for TIG.

Output ranges are 20–350 amps for MIG/flux-cored, 30–275 amps for Stick and 5–275 amps for DC TIG. Auto-Line automatically accepts any single-phase input voltage from 208–575V without manual linking, while generator compatibility allows full output from generators rated at 12 kW or higher.

Auto-Set technology provides predefined welding parameters for MIG, pulsed MIG, Stick and DC TIG, while Program mode stores up to four programs per process. A 7-inch color LCD provides process selection, setup guidance and troubleshooting information.

For aluminum MIG welding, the Multimatic 255 supports compatible spool guns and push-pull guns. Auto-Gun Detect automatically adjusts parameters when switching between standard MIG, push-pull and spool-gun configurations.

Stock number 907728 includes the power source, 15 ft. MDX-250 MIG gun, electrode holder and cable, work lead and clamp, flow gauge regulator and gas hose, reversible drive rolls, extra contact tips and material-thickness gauge. Running gear and TIG equipment are optional.

Key Features

• MIG, pulsed MIG and flux-cored welding
• DC Stick welding including E6010
• DC Lift-Arc TIG and pulsed TIG
• Auto-Line 208–575V single-phase input
• MIG rated output: 230A at 25.5V, 60% duty cycle
• Stick rated output: 200A at 28V, 60% duty cycle
• TIG rated output: 275A at 21V, 60% duty cycle
• MIG output range: 20–350A
• Stick output range: 30–275A
• TIG output range: 5–275A
• 50–800 IPM wire-feed-speed range
• 81VDC maximum open-circuit voltage
• Auto-Set technology
• Program mode with four programs per process
• 7-inch color LCD interface
• Pulsed MIG for aluminum and stainless steel
• Compatible with spool guns and push-pull guns
• Generator compatible
• 84 lb. machine-only weight
• Three-year welder warranty

Stock Number 907728

• Multimatic 255 machine-only package
• 15 ft. MDX-250 MIG gun included
• Electrode holder and work lead included
• Flow gauge regulator and gas hose included
• Running gear, spool gun, push-pull gun and TIG equipment sold separately