Processes
AC/DC TIG (GTAW), Pulsed TIG (GTAW-P), Stick (SMAW), Air carbon arc (CAC-A)
Miller Stick / TIG Machine Support
Dynasty 400
Heavy industrial 400 amp AC/DC TIG and stick power source with 7-inch LCD controls, Auto-Line 208-600 V input, Coolmate 3.5/CPS support, water-cooled TIGRunner, and W-375 Complete package path.
AC/DC TIG (GTAW)Pulsed TIG (GTAW-P)Stick (SMAW)Air carbon arc (CAC-A)
Heavy industrial
Output range
3-400 A TIG and Stick
Input power
208-600 V, 3-phase or 1-phase
Class
Heavy industrial
Status
Current catalog
Source page
Miller catalog page 65
Dynasty 400 Spec Sheet Quick Specs
- Applications: Precision fabrication, heavy fabrication, pipe and tube fabrication, aerospace, aluminum ship repair, and anodized aluminum fabrication.
- Processes: AC/DC TIG, pulsed TIG, stick, and air carbon arc gouging.
- Input power: 208-600 V, 3-phase or 1-phase power.
- Amperage range: 3-400 A.
- Rated output: 300 A at 32 V, 60% duty cycle.
- Net weight: 126 lb machine only; 246 lb with TIGRunner.
- Air carbon arc maximum: 1/4 in.
Dynasty 400 Specifications
| Input power | Amperage range | Rated output | Input at rated output | KVA / KW | Notes |
|---|---|---|---|---|---|
| 3-phase | 3-400 A | 250 A at 30 V, 100% duty cycle | 208 V 28 A; 230 V 26 A; 400 V 14 A; 460 V 13 A; 600 V 10 A | 10.3 / 9.8 | 75 VDC max OCV; 10-15 VDC low OCV sense voltage. |
| 3-phase | 3-400 A | 300 A at 32 V, 60% duty cycle | 208 V 36 A; 230 V 33 A; 400 V 19 A; 460 V 16 A; 600 V 12 A | 13.1 / 12.5 | Dimensions: H 24.125 in, W 13.875 in, D 24.313 in. |
| 1-phase | 3-400 A | 200 A at 27.2 V, 100% duty cycle | 208 V 39 A; 230 V 35 A; 400 V 19 A; 460 V 17 A; 600 V 12 A | 8.2 / 7.5 | TIGRunner dimensions: H 43.125 in, W 23.125 in, D 41.625 in. |
| 1-phase | 3-400 A | 250 A at 29 V, 60% duty cycle | 208 V 52 A; 230 V 47 A; 400 V 26 A; 460 V 22 A; 600 V 16 A | 10.9 / 9.9 | CSA certified; CE models conform to applicable IEC 60974 standards. |
Dynasty 400 Performance Data
| Input | TIG duty cycle | Stick duty cycle | Material range | Stick electrode max | CAC-A max / generator |
|---|---|---|---|---|---|
| 3-phase | 400 A 20%; 300 A 60%; 250 A 100% | 400 A 20%; 300 A 60%; 250 A 100% | AC TIG .015-5/8 in; DC TIG .012-5/8 in | 6010, 7018, and 7024 up to 1/4 in | 1/4 in; 20 kW generator requirement |
| 1-phase | 300 A 20%; 250 A 60%; 200 A 100% | 300 A 20%; 250 A 60%; 200 A 100% | AC TIG .015-5/8 in; DC TIG .012-5/8 in | 6010, 7018, and 7024 up to 1/4 in | 1/4 in; 20 kW generator requirement |
Dynasty 400 Process And Control Features
- 7-inch color LCD interface with soft keys, control knob, Home button, Program button, and USB port.
- Blue Lightning high-frequency starts, Lift-Arc AC/DC start, Pro-Set parameter support, locks and limits, program memory, and USB software/settings transfer.
- Auto-Line accepts 208-600 V input without manual linking.
- Cooler Power Supply is a 120 V dedicated-use receptacle for Coolmate 3.5, with Cooler-On-Demand operation.
- QuietPulse is available by selecting sine or triangular waveshape to reduce audible noise.
| Control area | Dynasty 400 setting range |
|---|---|
| TIG AC / TIG DC / Stick amperage | 3-400 A; amperage range is tungsten-size dependent for TIG. |
| Process modes | AC TIG HF, DC TIG HF, AC TIG Lift-Arc, DC TIG Lift-Arc, AC Stick, DC Stick, Carbon Arc Gouge, Hotwire |
| Tungsten choices | .020, .040, 1/16, 3/32, 1/8, 5/32, 3/16 in, General (.05, 1.0, 1.6, 2.4, 3.2, 4.0, 4.8 mm) |
| Trigger modes | Remote Standard: Foot, Finger, Pushbutton. Sequencer: Pushbutton Hold (2T), 3T 4T, 4TE, 4TL, 4TM. |
| Pulse | DC 0.1-5,000 pps; AC 0.1-500 pps; peak time 5-95%; background amps 5-95%; DC pulse waveform square, sine, triangular. |
| AC waveshape | Balance 30-99% EN; frequency 20-400 Hz; advanced square, soft square, sine, triangular; independent EN/EP amperage and waveform; commutation low/high. |
| Sequencer | Initial/final amps, initial/final time, slope, weld time, preflow 0.0-25.0 sec, postflow Auto/Off-50 sec. |
| Stick controls | DIG Off-100%, Hot Start On/Off, Stick-Stuck On/Off, OCV Normal/Low. |
| Programs and locks | 1-99 user-defined program names; individual parameter locks and limits; English, Spanish, French, German, Italian, Dutch, Swedish, Polish. |
Dynasty 400 Models And Packages
| Package path | Stock number | Spec-sheet package note |
|---|---|---|
| Machine only | 907858; 907858002 CE | Auto-Line 208-600 V standard model or 380-600 V CE model, 50/60 Hz, 8 ft power cord. Includes two 50 mm Dinse-style connectors. |
| TIGRunner | 907858001; 907858003 CE | Auto-Line package with Coolmate 3.5 and Runner cart. Torch kit, accessories, and coolant sold separately. CE TIGRunner uses quick-connect Coolmate 3.5. |
| Complete with wireless foot control | 951000002 | Includes TIGRunner plus coolant, W-375 torch kit 301268, and wireless foot control. |
| Build water-cooled package | 907858001 or 907858003 + 043810 + remote + 301268 | Order coolant in quantities of four, choose 14-pin remote control, then W-375 kit 301268 recommended for Dynasty 400. |
Dynasty 400 Torch And Accessory Details
| Item | Part number | Spec-sheet note |
|---|---|---|
| W-375 water-cooled torch kit | 301268 | Standard torch kit included in Dynasty 400 Complete package; includes W-375 25 ft TIG torch with Dinse-style connector, torch cable cover, work clamp with 15 ft 1/0 cable and Dinse-style connector, flowmeter regulator with gas hose, and AK4GL gas lens kit. |
| Contractor Kit | 301549 | All-in-one TIG/stick kit with Weldcraft A-200 torch, RFCS-14 HD foot control, 200 A electrode holder, 300 A work clamp, flow gauge regulator, gas hose, AK2C kit, and TIG torch connector. |
| A-200 (WP-26) TIG torch | WP-26-12-R; WP-26-25-R | For Dynasty 400 only; 200 A air-cooled torch; requires 195379 connector. |
| Water-cooled TIG torch connector | 195377 | For Dynasty 400. 50 mm Dinse-style with water return line for Weldcraft water-cooled torches. |
| Coolmate 3.5 | 301788; 301789 | 120 V, 50/60 Hz cooler for water-cooled torches rated up to 600 A; 301789 is CE quick-connect model. |
| Runner cart | 300244 | Shared high-output cart for Dynasty 800, Dynasty 400, or Maxstar 400 with Coolmate 3.5. |
| Automation interface kit | 278161 | Field-installed 28-pin automation connection. |
| Weld current sensor | 300179 | Field-installed sensor that detects when work clamp is not connected. |
| Quick connects | QRG; QRW | QRG for gas hoses; QRW for water hoses. QRW required when ordering torch or torch kit for CE TIGRunner. |
Dynasty 400 Tungsten Reference
| Tungsten | Amp range | 2% ceriated | 2% lanthanated |
|---|---|---|---|
| 1/16 in (1.6 mm) | 70-150 A | WC116X7 | WL2116X7 |
| 3/32 in (2.4 mm) | 140-250 A | WC332X7 | WL2332X7 |
| 1/8 in (3.2 mm) | 225-400 A | WC018X7 | WL2018X7 |
| 5/32 in (4.0 mm) | 300-500 A | WC532X7 | WL2532X7 |
Machine Packages
| Stock number | Catalog package |
|---|---|
| 907858 | Dynasty 400 power source only |
| 907858002 | Dynasty 400 CE power source only |
| 907858001 | Dynasty 400 TIGRunner |
| 907858003 | Dynasty 400 CE TIGRunner |
| 951000002 | Dynasty 400 Complete with Wireless Foot Control |
Compatible Accessories
Runner Cart
300244 Shared high-output cart for Dynasty 800, Dynasty 400, or Maxstar 400 with Coolmate 3.5.
Open support pageCoolmate 3.5
301788 120 V, 50/60 Hz cooler for water-cooled torches rated up to 600 A.
Open support pageCoolmate 3.5 Quick Connect
301789 CE quick-connect Coolmate 3.5 model.
Open support pageCooler Adapter
301791 Used to connect legacy Coolmate 3.5 to power source.
Open support pageLow-Conductivity Coolant
043810 Order in quantities of four for Dynasty 400 TIGRunner water-cooled package builds.
Open support pageAutomation Interface Kit
278161 Field-installed 28-pin automation interface.
Open support pageWeld Current Sensor
300179 Field-installed work-clamp connection sensor.
Open support pageDinse-Style Connector 50 mm
042418 One male connector for Dinse terminal machine.
Open support pageDinse-Style Extension Connector
042419 One male and one female Dinse-style extension connector.
Open support pageDinse/Tweco Adapter
042465 Male Dinse to female Tweco adapter.
Open support pageDinse/Cam-Lok Adapter
042466 Male Dinse to female Cam-Lok adapter.
Open support pageWeldcraft Gas Hose Quick Connect
QRG Quick connection and removal for shielding gas hoses.
Open support pageWeldcraft Water Hose Quick Connect
QRW Quick connection and removal for coolant hoses; required for CE TIGRunner torch or torch kit.
Open support pageWireless Remote Foot Control
301580 Remote current and contactor control with 14-pin receiver and 90 ft operating range.
Open support pageRFCS-14 HD Foot Control
301589 Heavy-duty 14-pin foot pedal with 20 ft cord.
Open support pageRCC-14 E/W Fingertip Control
151086 East/west rotary-motion fingertip control with 26.5 ft cord and 14-pin plug.
Open support pageRCCS-14 N/S Fingertip Control
043688 North/south rotary-motion fingertip control with 26.5 ft cord and 14-pin plug.
Open support pageRMS-14 Pushbutton Control
187208 Momentary-contact on/off control with 26.5 ft cord and 14-pin plug.
Open support pageRMLS-14 Momentary/Maintained Switch
129337 Momentary and maintained-contact rocker switch with 26.5 ft cord and 14-pin plug.
Open support pageRHC-14 Hand Control
242211020 Miniature 14-pin hand control with 20 ft cord.
Open support pageWireless Remote Hand Control
301582 Wireless hand control with 14-pin receiver and 300 ft operating range.
Open support page14-Pin Remote Extension Cable, 25 ft
242208025 Extension cable for 14-pin remote controls.
Open support page14-Pin Remote Extension Cable, 50 ft
242208050 Extension cable for 14-pin remote controls.
Open support page14-Pin Remote Extension Cable, 80 ft
242208080 Extension cable for 14-pin remote controls.
Open support pageGas Tungsten Arc Welding Publication
250833 Miller TIG educational material listed with Dynasty 800 accessory support.
Open support pageCompatible TIG Torch Paths
Weldcraft W-375 water-cooled torch kit
301268 Recommended Dynasty 400 water-cooled torch kit and included torch kit in the Dynasty 400 Complete package.
Open support pageWeldcraft A-200 (WP-26) TIG torch
WP-26-12-R / WP-26-25-R Dynasty 400-only air-cooled torch path; requires connector 195379.
Open support pageContractor Kit
301549 A-200 TIG/stick kit path with RFCS-14 HD foot control and AK2C accessory kit.
Open support pageWater-Cooled TIG Torch Connector
195377 50 mm Dinse-style connector with water return line for Dynasty 400 water-cooled Weldcraft torches.
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 |
|---|---|---|---|
| 042533 | 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 |
| 195378 | Air-Cooled TIG Torch Connector | 50 mm Dinse-style for Multimatic 235/255, CST, Syncrowave 300/400, Maxstar 210/280/400, and Dynasty 210/300/400. | Catalog p. 128 Open support path |
| 301309 | Contractor Kit: A-150 with RFCS-14 HD | For Maxstar 210/280 and Dynasty 210/300. | Catalog p. 128 Open support path |
| 301311 | Contractor Kit: A-150 with RCCS-14 | For Maxstar 210/280 and Dynasty 210/300. | Catalog p. 128 Open support path |
| 301550 | Contractor Kit: A-200 with RCCS-14 | For Maxstar 210/280 and Dynasty 210/300. | Catalog p. 128 Open support path |
| 300185 | Weldcraft W-250 Water-Cooled Torch Kit | For Syncrowave 300/400, Maxstar except 161, and Dynasty. | Catalog p. 128 Open support path |
| 300990 | Weldcraft W-280 Water-Cooled Torch Kit | For Syncrowave 300/400, Maxstar except 161, and Dynasty. | Catalog p. 128 Open support path |
| 290084 | Replacement Lens Cover | For Syncrowave 212 and Dynasty 210/300. | Catalog p. 128 Open support path |
| 301382 | Protective Cover | For Maxstar 280 and Dynasty 210/300. | Catalog p. 128 Open support path |
Included / Package Notes
Included With Packages
- Dynasty 400 machine-only packages include 8 ft power cord with no plug and two 50 mm Dinse-style connectors.
- Dynasty 400 TIGRunner packages include 8 ft power cord with no plug, Coolmate 3.5, and Runner cart; the CE TIGRunner uses the quick-connect Coolmate 3.5.
- Dynasty 400 Complete with Wireless Foot Control includes TIGRunner package plus four one-gallon bottles of 043810 coolant, W-375 torch kit 301268, and wireless foot control 301580.
- Torch kit, accessories, and coolant are sold separately with TIGRunner packages unless ordered as the Complete package.
Process Notes
- AC/DC TIG (GTAW)
- Pulsed TIG (GTAW-P)
- Stick (SMAW)
- 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 65, literature AD/5.5. Structured from the Miller Dynasty 400 and 800 spec sheet issued March 2026, Index No. AD/5.5. This support page separates Dynasty 400 stock numbers, ratings, connectors, and torch paths from Dynasty 800. Machine specifications and accessory relationships are catalog-backed.