Processes
TIG (GTAW), Stick (SMAW), Pulsed TIG, Air carbon arc (CAC-A)
Miller Stick / TIG Machine Support
Maxstar 280 Series
DC TIG/stick series covering Maxstar 280 Base, CPS, DX, DX CPS, and TIGRunner packages. Supports Auto-Line 208-575 V input, 1-280 A TIG, 5-280 A stick, air carbon arc, CPS/Cooler Power Supply models, and water-cooled package builds with W-280 or W-375 torch options.
TIG (GTAW)Stick (SMAW)Pulsed TIGAir carbon arc (CAC-A)
Industrial
Output range
TIG 1-280 A; Stick 5-280 A.
Input power
208-575 V, 1- or 3-phase, 50/60 Hz
Class
Industrial
Status
Current catalog
Source page
Miller catalog page 62
Maxstar 280 Spec Sheet Quick Specs
Industrial Applications
- Precision fabrication
- Petro chemical
- Aerospace
- Food and beverage industry
- Dairy
- Shipboard
Maxstar 280 Features
- Auto-Line accepts 208-575 V input with no manual linking
- Blue Lightning high-frequency starts and Lift-Arc start mode
- Pulsed TIG with square, sine, and triangular waveform choices; QuietPulse uses sine or triangular waveforms
- Auto-postflow, Pro-Set, memory-card updates, sleep timer, meter calibration, Wind Tunnel Technology, and Fan-On-Demand
- CPS models include a 120 V Coolmate 1.3 receptacle and Cooler-On-Demand operation
Package Notes
- Maxstar 280 base stock number is 907552; CPS stock number is 907538
- Maxstar 280 DX stock number is 907553; DX CPS stock numbers are 907539 and 907539002 CE
- Water-cooled TIGRunner stock numbers are 907538002 and 907539001
- Power source includes adjustable shoulder strap, 8 ft power cord with no plug, and two 50 mm Dinse-style connectors
Maxstar 280 Specifications
| Process | Input phase | Amperage range | Rated output | Amps input at rated output | KVA / KW |
|---|---|---|---|---|---|
| TIG | 3-phase | 1-280 A | 250 A at 20 V, 60% duty cycle | 208 V: 21 A; 230 V: 19 A; 400 V: 11 A; 460 V: 9 A; 575 V: 7 A | 7.6 / 7.3 |
| TIG | 1-phase | 1-280 A | 250 A at 20 V, 60% duty cycle | 208 V: 35 A; 230 V: 32 A; 400 V: 18 A; 460 V: 16 A; 575 V: 13 A | 7.3 / 7.1 |
| Stick | 3-phase | 5-280 A | 250 A at 30 V, 60% duty cycle | 400 V: 14 A; 460 V: 13 A; 575 V: 10 A | 9.9 / 9.6 |
| Stick | 1-phase | 5-280 A | 180 A at 27.2 V, 60% duty cycle | 208 V: 32 A; 230 V: 29 A | 6.7 / 6.5 |
Maxstar 280 max open-circuit voltage is 60 VDC with 11 VDC low OCV sense voltage for stick and Lift-Arc TIG. Dimensions are H 13.6 in., W 8.6 in., D 22.5 in.; net weight is 47 lb, or 50 lb with CPS. Refer to the owner manual for complete stick ratings.
Maxstar 280 Performance Data
| Input power | TIG duty cycle | Stick duty cycle | DC TIG material thickness range | Stick electrode maximum diameter | Carbon arc gouging maximum | Generator requirement |
|---|---|---|---|---|---|---|
| 380-575 V | 280 A at 40%; 250 A at 60%; 200 A at 100% | 280 A at 35%; 250 A at 60%; 200 A at 100% | 0.004-3/8 in. (0.1-9.5 mm) | 6010: 1/4 in.; 7018: 7/32 in.; 7024: 3/16 in. | 3/16 in. | 12.5 kW |
| 208-240 V | 280 A at 40%; 250 A at 60%; 200 A at 100% | 280 A at 15%; 180 A at 60%; 145 A at 100% | 0.004-3/8 in. (0.1-9.5 mm) | 6010: 1/4 in.; 7018: 7/32 in.; 7024: 3/16 in. | 3/16 in. | 12.5 kW |
Maxstar 280 Models And Packages
| Package | Stock numbers | Included or required items |
|---|---|---|
| Power sources | 907552; 907538; 907553; 907539; 907539002 CE | Maxstar 280, Maxstar 280 CPS, Maxstar 280 DX, Maxstar 280 DX CPS, and Maxstar 280 DX CPS CE. Each includes adjustable shoulder strap, 8 ft power cord with no plug, and two 50 mm Dinse-style connectors. |
| Air-cooled contractor kit path | 301309; 301311; 301549; 301550 | Choose A-150 or A-200 kit with RFCS-14 HD foot control or RCCS-14 fingertip control. For models without CPS, Coolmate 1.3 must be powered through external 120 V facility power. |
| Water-cooled TIGRunner path | 907538002; 907539001; 043810 | Choose Maxstar 280 CPS TIGRunner or Maxstar 280 DX CPS TIGRunner, then order four gallons low-conductivity coolant. TIGRunner includes 8 ft power cord, Coolmate 1.3, and Small Runner cart. Torch kit, accessories, and coolant are sold separately. |
| Water-cooled torch kit path | 300185; 300990; 301268 | Choose W-250 kit, W-280 kit recommended for Maxstar 280, or W-375 kit. Kits include 25 ft Weldcraft torch with Dinse-style connector, cable cover, work clamp, flowmeter regulator with gas hose, and AK4GL gas lens kit. |
Maxstar 280 Cooler, Torch, And Accessory Details
| Item | Part number | Notes |
|---|---|---|
| Coolmate 1.3 | 301616; 301617 quick connect | 115 V, 50/60 Hz, 1.3 gal cooler. Rated cooling capacity is 1,330 W / 4,540 Btu/hr at 1.1 qt/min. Maxstar models with CPS can turn Coolmate 1.3 on and off. |
| Weldcraft W-280 (WP-280) TIG torch | 300990 kit | Water-cooled torch rated 280 A DC, 100% duty cycle; 195 A AC, 100% duty cycle; uses 13N consumables and .020-1/8 in. electrode range. |
| Protective cover | 301382 | Fits Maxstar 280 and Dynasty 210/300. |
| Weldcraft A-150 (WP-17) | WP-17-12-R; WP-17-25-R | Air-cooled A-150 torches require connector 195378. |
| Weldcraft A-200 (WP-26) | WP-26-12-R; WP-26-25-R | Air-cooled A-200 torches require connector 195379. |
| Weldcraft A-250 TIG torch | 301525025; 301525026 | 250 A air-cooled two-piece torch with 25 ft cable; 301525025 no valve, 301525026 with valve. Requires Dinse-style connector 042533 or Tweco-style connector 191981. |
| Air-cooled TIG torch connectors | 195379; 195378 | 195379 connects A-200 (WP-26); 195378 connects all other air-cooled Weldcraft torches except A-200. A-80 (WP-24) torches require 24-5 connector. |
| Water-cooled TIG torch connector | 195377 | 50 mm Dinse-style connector with water return line for Weldcraft water-cooled torches. |
| Educational materials | 250833; 251116 | Gas Tungsten Arc Welding publication and setup DVD. |
Machine Packages
| Stock number | Catalog package |
|---|---|
| 907552 | Maxstar 280 power source only |
| 907538 | Maxstar 280 power source with CPS |
| 907553 | Maxstar 280 DX power source only |
| 907539 | Maxstar 280 DX power source with CPS |
| 907539002 | Maxstar 280 DX power source with CPS, CE |
| 907538002 | Maxstar 280 TIGRunner with CPS |
| 907539001 | Maxstar 280 DX TIGRunner with CPS |
Compatible Accessories
2-Wheel Trolley Cart
300971 For Maxstar 210/280 and Dynasty 210/300 with or without Coolmate 1.3.
Open support pageSmall Runner Cart
301615 For Maxstar 210/280 and Dynasty 210/300 with Coolmate 1.3.
Open support pageCoolmate 1.3
301616 120 V cooler for torches up to 280 A; requires coolant.
Open support pageCoolmate 1.3 Quick Connect
301617 120 V quick-connect Coolmate 1.3; requires coolant.
Open support pageTIG Coolant
043810 One-gallon bottle; order in quantities of four for water-cooled package builds.
Open support pageNo. 2 Stick Cable Set
195196 15 ft electrode cable with holder and work cable with clamp; 200 A, 100% duty cycle.
Open support page14-Pin Automation Expansion Memory Card
301151 Memory card expansion for common automation functions through the 14-pin connection.
Open support page14-Pin Modbus Expansion Memory Card
301152 Memory card expansion for basic and advanced functions through the 14-pin connection.
Open support pageQuietPulse Expansion Memory Card
301790 Adds QuietPulse to machines manufactured prior to serial number ND040985L.
Open support pageBlank Memory Card
301080 Blank commercially available memory card for software updates and expandable features.
Open support pageAir-Cooled TIG Torch Connector
195378 Connects air-cooled Weldcraft torches except A-200 to Dinse-style connector.
Open support pageAir-Cooled TIG Torch Connector for A-200
195379 Connects Weldcraft A-200 (WP-26) torch to Dinse-style connector.
Open support pageWater-Cooled TIG Torch Connector
195377 50 mm Dinse-style connector with water return line for Weldcraft water-cooled torches.
Open support pageWireless Remote Foot Control
301580 14-pin wireless foot control with 90 ft operating range.
Open support pageRFCS-14 HD Foot Control
301589 Heavy-duty wired foot control with 20 ft cord and 14-pin plug.
Open support pageRCC-14 Fingertip Control
151086 East/west fingertip current and contactor control.
Open support pageRCCS-14 Fingertip Control
043688 North/south fingertip current and contactor control.
Open support pageRMS-14 On/Off Control
187208 Momentary-contact rubber dome switch for contactor control.
Open support pageRMLS-14 Switch
129337 Momentary- and maintained-contact rocker switch.
Open support pageRHC-14 Hand Control
242211020 Miniature hand control with 20 ft cord and 14-pin plug.
Open support pageWireless Remote Hand Control
301582 14-pin wireless hand control with 300 ft operating range.
Open support pageTIG Setup DVD
251116 Setup DVD covering tungsten selection, setup menus, DC pulse, sequencer, balance, and frequency settings.
Open support pageProtective Cover for Maxstar 280
301382 Fits Maxstar 280 and Dynasty 210/300.
Open support pageDinse-Style Connector for A-250
042533 Dinse-style connector listed for two-piece A-250 torch path.
Open support pageTweco-Style Connector for A-250
191981 Tweco-style connector listed for two-piece A-250 torch path.
Open support pageGas Tungsten Arc Welding Publication
250833 Educational material listed on the Maxstar 280 spec sheet.
Open support pageCompatible TIG Torch Paths
Weldcraft A-150 contractor kit with RFCS-14 HD
301309 Air-cooled Maxstar 210/280 contractor kit with A-150 torch and RFCS-14 HD foot control.
Open support pageWeldcraft A-150 contractor kit with RCCS-14
301311 Air-cooled Maxstar 210/280 contractor kit with A-150 torch and RCCS-14 fingertip control.
Open support pageWeldcraft A-200 contractor kit with RFCS-14 HD
301549 Air-cooled Maxstar 210/280 contractor kit with A-200 torch and RFCS-14 HD foot control.
Open support pageWeldcraft A-200 contractor kit with RCCS-14
301550 Air-cooled Maxstar 210/280 contractor kit with A-200 torch and RCCS-14 fingertip control.
Open support pageWeldcraft A-250 TIG torch
301525025 Maxstar 280 air-cooled A-250 no-valve torch path; with-valve torch is 301525026.
Open support pageWeldcraft W-250 water-cooled torch kit
300185 Optional water-cooled torch kit listed in the Maxstar 280 water-cooled torch package path.
Open support pageWeldcraft W-280 water-cooled torch kit
300990 Spec sheet recommended water-cooled torch kit for Maxstar 280.
Open support pageWeldcraft W-375 water-cooled torch kit
301268 Catalog-listed Maxstar 280 water-cooled torch kit option.
Open support pageStick Lead Path
Stick Leads, Electrode Holders & Work Clamps
Use this path after confirming the machine Dinse or weld cable connector style.
Open support pageMiller Catalog Accessories
These accessories are placed here only when the Miller catalog names this machine, torch, feeder, or family path. Verify plug style, voltage, package, and serial-specific details before ordering.
| Part | Accessory | Catalog fitment | Source / path |
|---|---|---|---|
| 042418 | Dinse-Style Connector Kit | Accepts #4 to #1/0 AWG cable. Catalog lists Dinse/Tweco secondary-connection power-source paths. | Catalog p. 121 Open support path |
| 042934 | Universal Cart and Cylinder Rack | For XMT 400, CST, Maxstar 210/280, and Dynasty 210/300. | Catalog p. 121 Open support path |
Included / Package Notes
Included With Packages
- Maxstar 280 power source includes adjustable shoulder strap, 8 ft power cord with no plug, and two 50 mm Dinse-style connectors
- Maxstar 280 CPS models provide an integrated 120 V dedicated-use receptacle for Coolmate 1.3 and support Cooler-On-Demand
- Maxstar 280 TIGRunner adds Coolmate 1.3 and Small Runner cart; torch kit, accessories, and coolant are sold separately
Process Notes
- TIG (GTAW)
- Stick (SMAW)
- Pulsed TIG
- Air carbon arc (CAC-A)
Next Lookup Step
After you identify the machine, open the torch path for TIG cups, collets, gas lenses, or back caps. Open stick accessories for leads, holders, clamps, and connector checks.
Need More Help?
Stick Support
Troubleshooting stays secondary. Start with the machine package, then verify the leads, holder, remote, cooler, or TIG torch path.
TIG Support
Many inverter stick machines also run TIG. Use the torch path when the question is cups, collets, gas lenses, back caps, or cooling.
Search
Use Find My Part when the machine name, stock number, or accessory part number is known.
Source: Miller Electric 2026 Full-line Catalog, catalog page 62, literature DC/35.0. Additional source: Miller Maxstar 280 Series TIG/Stick Welding Power Source data sheet, issued June 2023, Index No. DC/35.0. This page separates Maxstar 280 Base/CPS/DX/TIGRunner stock numbers, 208-575 V input, CPS cooler power, and W-280/W-375 torch paths from Maxstar 210. Machine specifications and accessory relationships are catalog-backed.