Hover cursor over image to view larger picture


WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Miller® Dynasty® 280 TIG Welder, 208/575 Volt With Dynasty® 280 Power Source, 8' Primary Power Cord, Cooler Power Supply, Coolmate™ 1.3 Coolant System, Small Runner Cart, Remote Foot Control, Torch Kit And Quick-Reference Guide

Airgas Part #:MIL951466

Miller Electric Manufacturing

Manufacturer #:951466

$9,099.00 /Each
Package Size: 1 Each
$9,099.00 Each
$9,099.00 Each

Typically in Stock

Item Details

  • Miller™ Dynasty™ 280 Complete Welder Machine Power Source with Foot Control Cooler Power Supply is a fully integrated 280 A water-cooled welding system. Welder Power source is ideal for AC/DC TIG or stick welding purposes. It uses a simple menu-driven user friendly interface and is used in industrial, precision/heavy fabrication as well as aerospace applications. Welder Power source can weld materials up to 3/8" thick. It has front panel memory card data port that provides the ability to easily upgrade software and expands product features. Pro-Set™ feature helps to eliminate guesswork and can be selected whenever needed. Sleep timer is a feature that helps in electricity conservation with a programmable feature that sleeps when the system is kept idle. Auto-Line™ offers flexibility by automatically connecting to 208 - 575 VAC 1/3 Phase power without removing the covers to relink the power source. Cooler power supply comes with Coolmate™ 1. 3 active receptacle to help prevent torch failure. Lift-Arc™ offers AC or DC arc starting without the use of high frequency. Blue Lightning™ high-frequency arc starter for non-contact arc initiation provides more consistent arc starts and greater reliability compared to traditional HF arc starter. Meter calibration allows easy in presetting and monitoring. Wind Tunnel Technology™ protects internal electrical components from airborne contaminates, extending the product life. Fan-On-Demand™ cooling system is used to cool that system while pulling out contamination. Thermal overload protection protects internal components from overheating.


  • Upgradeable and Expandable: Front panel memory card data port provides the ability to easily upgrade software and expand product features
  • Auto-Line Power Management Technology: Allows hookup to either single-phase or three-phase electrical input from 208-575 V with no manual linking, providing convenience in any job setting. An ideal solution for dirty or unreliable input power
  • Stick Features (AC/DC): Tailored arc control (DIG) allows the arc characteristic 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
  • Stick-Stuck detects if the electrode is stuck to the part and turns the welding output off to safely and easily remove the electrode, menu selectable
  • Portable with adjustable shoulder strap: Weighing in at just 52 pounds, the Dynasty 280 is extremely portable and easy to transport featuring dual carry handles and a carrying strap
  • Cooler Power Supply (CPS): An integrated 120-volt dedicated-use receptacle to power the Coolmate™ 1. 3. The power switch on the Dynasty also activates the receptacle to help prevent torch failure. Available on select models
  • Pro-Set Feature (professional settings): This feature eliminates the guesswork when setting weld parameters. Use Pro-Set when you want the speed, convenience and confidence of pre-set controls. Simply select the feature and adjust until Pro-Set appears on the display. The Pro-Set feature is available for Balance, Frequency, Pulse and DIG parameters
  • Weldcraft™ W-280 (WP-280) TIG Torch: Two-piece torch head and exclusive Super Cool™ Technology provides additional surface area to increase cooling efficiency and capacity
  • Torch body includes an anti-rotation feature and multi-position locking to prevent handle movement during welding and improve operator control
  • Mechanical fittings provide a secure gas and water connection to prevent leakage and allow easy hose replacement


  • Input Power: 208-575 V- (1 or 3 Phase)- 50/60 Hz
  • Rated Output: TIG: 235 A at 19. 4 V, 60% Duty Cycle (1 or 3 Phase), Stick: 180 A at 27. 2 V, 60% Duty Cycle (1 Phase), 200 A at 28 V, 60% Duty Cycle (3 Phase)
  • Output Range: 1 - 280 Amps AC/DC
  • Dimensions (H X W X D): 13. 6" x 8. 6" x 22. 5"
  • Net Weight: 55 lb


  • Dynasty™ 280 power source
  • 8' primary power cord
  • Cooler power supply
  • Coolmate™ 1. 3 coolant system
  • Small runner cart
  • Remote foot control
  • Torch kit
  • Quick-reference guide


  • Aluminum welding
  • Aviation
  • Fabrication
  • Pipe fabrication
  • Ship/Boat

Product Attributes

Trade Name

» Dynasty® 280

Input AC Voltage

» 208V
» 575V


» AC Stick (SMAW)
» Air Carbon Arc (CAC-A) Cutting and Gouging
» DC Pulsed TIG (GTAW-P)
» DC Stick (SMAW)

Output Current

» AC/DC - CC

Output DC Amps (Max)

» 280

Output AC Amps (Max)

» 280


» 1 or 3 Phase


» 50/60 Hz


» 55 lb

Physical Size

» 13.6" X 8.6" X 22.5"

Duty Cycle

» 180 Amps At 27.2 Volt At 60%
» 200 Amps At 28 Volt At 60%
» 235 Amps At 19.4 Volt At 60%