Maxstar 280 Multiprocess | MillerWelds

Maxstar 280 Multiprocess, Tweco

The Maxstar 280 Series has now expanded beyond the industry leading TIG and Stick performance by the additional CV output which allows for MIG capability - making this multiprocess line the perfect solution for ship building, construction, mechanical contractors and MRO.
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What's Included

  • Maxstar® 280 Multiprocess, Tweco
  • 8 ft. (2.4 m.) Primary Cord
  • Adjustable Shoulder Strap
QuietPulse is activated by changing the waveshape for DC pulse welding, creating a slower, more fluid transition between the background and peak amperage to create the least possible audible noise.   Learn More
Multiprocess Capabilities
MIG, flux-cored, DC stick and DC TIG processes, allowing you ultimate versatility.
CV output of the power source gives this unit MIG process capabilities when paired with an ArcReach® 8 or 12 (or other voltage-sensing feeder).
Blue Lightning™
High-frequency (HF) arc starter for non-contact arc initiation. Provides more consistent arc starts and greater reliability compared to traditional HF arc starters.
Eliminates the guesswork when setting weld parameters. Use Pro-Set when you want the speed, convenience and confidence of preset controls. Simply select the feature and adjust until Pro-Set appears on the display.   Learn More
Stick Features
Tailored arc control (DIG) allows the arc characteristics to be changed for specific applications and electrodes. Smooth running 7018 or stiffer, more penetrating 6010. Hot Start™ adaptive control provides positive arc starts without sticking.
Cooling system operates only when needed, reducing noise, energy use and the amount of contaminants pulled through machine.

Not Included

  • Weld leads
  • TIG torch
  • TIG remote fingertip/foot control
  • Work cables
  • Quick Reference Guide
  • ArcReach® SuitCase® 8 or 12 feeder
  • TIG torch adapter



Air Carbon Arc Cutting and Gouging (CAC-A)
Flux Cored (FCAW)
Stick (SMAW)

General Specifications

Title Maxstar 280 Multiprocess, Tweco
Industries Interests Aerospace
Weldable Metals Specialty Metals
Stainless Steel
Input Voltage 208 V
220/230/240 V
380/400 V
460/480 V
575 V
Rated Carbon Diameter 3/16 in (4.8 mm)
Input Phase 1- and 3-Phase
Input Hz 50/60 Hz
Current Type DC
Portability Handle(s)
Running Gear / Cart (Optional)
Weld Output CC / CV
Applications Fabrication
Process Pipe
Refineries and Power Plants
Stainless Steel
Tube and Pipe Fabrication
Net Width 8.625 in
Net Height 13.625 in
Net Length 22.5 in
Net Weight 47 lbs
Warranty 3 Years
Miller's True Blue Warranty