Dynasty® 300 Multiprocess Welder | MillerWelds

Dynasty® 300 Multiprocess

The Dynasty 300 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, educational and more.

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What's Included

  • Dynasty 300 Multiprocess
  • Adjustable Shoulder Strap
  • (2) Dinse/Tweco® Adapters (042465)
  • (2) 50 mm Dinse style connectors
  • 8 ft. (2.4 m.) Weld Cable with Tweco®-style connectors to power feeder
  • 8 ft. (2.4 m.) Primary Cord
Intuitive Interface LCD Display
Ensure proper machine setup and parameter selection with informative on-screen explanations and dynamic images.   Learn More
Program Memory
Allows easy naming, saving and recalling of favorite weld settings.
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.   Learn More
Locks and Limits
Provides control of the weld parameter ranges minimizing deviations from the welding procedure specifications (WPS).   Learn More
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
USB Port
Provides the ability to easily update software, back-up settings and transfer saved weld programs from one unit to the next.
Auto-Line™ Technology
For portability and reliability this inverter power supply allows for any single-phase input voltage hookup (208–600 V) with no manual linking, providing convenience in any job setting. Ideal solution for dirty or unreliable power.   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.
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.
Feature operates the auxiliary cooling system only when needed, reducing noise, energy use, and airborne contaminants pulled through the cooler.
Cooling system operates only when needed, reducing noise, energy use and the amount of contaminants pulled through machine.
AC Frequency Control
Control the width of the arc cone and can improve directional control of the arc with adjustments between 50-150 Hertz.   Learn More

Not Included

  • TIG torch
  • TIG torch adapter
  • Work cables
  • TIG remote fingertip/foot control



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

General Specifications

Title Dynasty® 300 Multiprocess
Industries Interests Shipbuilding
Construction and Fabrication
Amperage 1 A - 300 A
Weldable Metals Aluminum
Specialty Metals
Stainless Steel
Input Voltage 208 V
220/230/240 V
380/400 V
460/480 V
575/600 V
Rated Carbon Diameter 3/16 in (4.8 mm)
Input Phase 1- and 3-Phase
Input Hz 50/60 Hz
Current Type AC / DC
Max Open Circuit Voltage 60 VDC
Portability Running Gear / Cart (Optional)
Weld Output CC/CV
Applications Aluminum Welding
Welding Education and Training
Net Width 8.6 in
Net Height 13.6 in
Net Length 22.5 in
Net Weight 55 lbs





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