Miller
907728
Multimatic 255
Output5–350 A.
DutyMIG: 230 A at 25.5 V, 60% duty cycle. Stick: 200 A at 28 V, 60% duty cycle. TIG: 275 A at 21 V, 60% duty cycle.
InputAuto-Line 208–575 V, single-phase. Input amperes are not in the quick specs.
PlugPlug not printed
10 min cycle, 240V class
No duty percent printed for this outlet.
Does not pass 120V/15A
Sheet
Copied from the cited page. Not taken from another model or a review.
| Spec | Published value | Source, checked 2 November 2026 |
|---|---|---|
| Process | MIG (GMAW), pulsed MIG (GMAW-P), flux-cored (FCAW), DC stick (SMAW), DC Lift-Arc TIG (GTAW), and pulsed TIG (GTAW-P). | Quick specs, Processes |
| Output amp range | 5–350 A. | Quick specs, Amperage Range |
| Rated duty cycle | MIG: 230 A at 25.5 V, 60% duty cycle. Stick: 200 A at 28 V, 60% duty cycle. TIG: 275 A at 21 V, 60% duty cycle. | Quick specs, Rated Output |
| Input voltage and plug | Auto-Line 208–575 V, single-phase. Input amperes are not in the quick specs. | Quick specs, Input Power |
| Wire or rod size | Not published by manufacturer | The quick specs do not print a wire-diameter range. |
| Weight | Machine only: 84 lb. (38 kg). Machine with running gear: 148 lb. (67 kg). | Quick specs, Net Weight |
| Material thickness | Not published by manufacturer | The quick specs do not print a material thickness. |
Notes on the source
- A features sentence says the machine is ideal for MIG welding aluminum and stainless steel. No thickness is attached to that sentence.
Manufacturer page · Job check · Miller
From the table
What output does the Multimatic 255 publish?
5–350 A. Source: https://contenthub.itwwelding.com/api/public/content/miller-electric-mfg-llc/spec-sheet/PIM/cf7075-dc12-9.pdf
What duty cycle does the Multimatic 255 publish?
MIG: 230 A at 25.5 V, 60% duty cycle. Stick: 200 A at 28 V, 60% duty cycle. TIG: 275 A at 21 V, 60% duty cycle. Source: https://contenthub.itwwelding.com/api/public/content/miller-electric-mfg-llc/spec-sheet/PIM/cf7075-dc12-9.pdf
What input does the Multimatic 255 publish?
Auto-Line 208–575 V, single-phase. Input amperes are not in the quick specs.
Which processes does the Multimatic 255 publish?
MIG, flux-cored, stick, TIG.