Miller Dynasty 400 TIGRunner Package – 208–600V AC/DC TIG/Stick Welder #907858001

Part Numbers: 907858001

UPCs: 715959708371

Ships Free To Lower 48 States

Miller Dynasty® 400 TIGRunner #907858001 with running cart and Coolmate cooler

Miller Dynasty® 400 TIGRunner #907858001 with torch cooler included

Miller Dynasty® 400 TIGRunner #907858001 - Control panel screen on

Miller Dynasty® 400 TIGRunner #907858001 - Control panel screen off

Miller Dynasty 400 907858001 control panel diagram

Miller Dynasty 400 907858001 welding process features

Miller Dynasty 400 TIGRunner Package – 208–600V AC/DC TIG/Stick Welder #907858001

Part Numbers: 907858001

UPCs: 715959708371

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Features
Specs
Documents
Videos
Accessories
Consumables
FAQS

TIG Welding
Stick Welding
1- or 3-Phase Input
208-600V Input
8 ft Power Cord
3-Year Warranty

Miller Dynasty® 400 Welding Machine, 208-600 V, TIGRunner Package #907858001

Introducing Miller's latest professional TIG welding technology. A powerful, compact AC/DC inverter delivers superior arc performance with total AC arc-shaping capabilities. Auto-Line™ allows connection to any voltage or frequency in the world while using half the power of a conventional machine.

This TIGRunner package includes a Coolmate 3.5 torch cooler and cart, setting you up for TIG or stick welding steel and aluminum.

Highlights

Professional-grade AC/DC TIG power: Compact inverter delivers superior arc performance for steel, aluminum, and exotic metals
Complete TIGRunner package: Includes Coolmate™ 3.5 torch cooler and Runner™ cart for a turnkey setup
Auto-Line™ technology: Accepts 208–600V single-phase input with no manual linking — ideal for global job sites
Advanced AC/DC TIG features: Independent amplitude control, extended AC balance (30–99%), and 20–400Hz frequency adjustment for perfect aluminum welds
High-speed pulsed TIG: Up to 5,000 pulses per second to reduce heat input, increase travel speed, and minimize warpage
Intuitive LCD interface: Dynamic visual setup guidance, parameter explanations, and real-time adjustment feedback
Program memory & Pro-Set™: Save and recall preferred settings or use pre-set professional controls for faster setup
QuietPulse™ mode: Reduces audible noise while maintaining arc stability and precision
Tailored stick performance: Adaptive Hot Start™ and adjustable DIG for optimal performance with 6010/7018 electrodes
USB-enabled & software upgradable: Backup weld settings and update machine firmware easily

What's Included:

Dynasty 400 power source
8 ft power cord (no plug)
CoolmateTM 3.5
RunnerTM cart

Applications

Precision fabrication
Heavy fabrication
Pipe and tube fabrication
Aerospace
Aluminum ship repair
Anodized aluminum fabrication

Miller Maxstar® 400 TIG/Stick Welding Machine Power Source (208-600V) #907873

Browse All Miller Welding Machines Purchase Miller Welding Accessories Welder's safety equipment

Fast, Free Shipping & Easy Returns

Your in-stock items ship same or next day from our five distribution hubs in WI and IL via fast UPS Ground. Need special shipping? Just call 1-844-682-0205 - we accommodate any request, including using your shipping accounts. Enjoy hassle-free 14-day returns on new, sealed products. Count on exceptional service backed by industry-leading shipping and return policies. Experience the advantage on your next order!

Check out the wide selection of MIG, TIG, Stick and Gas welders available at Welders Supply Company.

This product replaces these legacy models:

Dynasty 400 TIG Runner #907717001

Other Versions of the Miller Dynasty® 400:

Miller Dynasty® 400 907858001 Specifications

Miller Dynasty 400 Spec Sheet

Input Power

Welding Amperage Range

Rated Output

Amps Input at Rated Load Output, 50/60 Hz

208 V 230 V 400 V 460 V 600 V KVA KW

Max. Open-Circuit Voltage

3-phase

3–400 A

250 A at 30 V,

100% duty cycle

28 26 14 13 10 10.3 9.8

75 VDC

(10–15 VDC*)

300 A at 32 V,

60% duty cycle

36 33 19 16 12 13.1 12.5

1-phase

3–400 A

200 A at 27.2 V,

100% duty cycle

39 35 19 17 12 8.2 7.5

250 A at 29 V,

60% duty cycle

52 47 26 22 16 10.9 9.9

Dynasty 400 Performance Data

Input Power

TIG (GTAW) Duty Cycle

Stick (SMAW) Duty Cycle

AC TIG Material Thickness Range

DC TIG Material Thickness Range

Stick Electrode Maximum Diameter

Carbon Arc Gouging (CAC-A) Maximum

Generator Requirement

3-phase

400 A, 20%

300 A, 60%

250 A, 100%

400 A, 20%

300 A, 60%

250 A, 100%

.015–5/8 in. (0.38–15.9 mm)

.012–5/8 in. (0.3–15.9 mm)

6010: 1/4 in. (6.4 mm)

7018: 1/4 in. (6.4 mm)

7024: 1/4 in. (6.4 mm)

1/4 in. (6.4 mm)

20 kVA

1-phase

300 A, 20%

250 A, 60%

200 A, 100%

300 A, 20%

250 A, 60%

200 A, 100%

Dynasty 400 Tungsten

Tungsten	Amp Range	2% Ceriated (AC/DC)	2% Lanthanated (AC/DC)
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