The Miller Dynasty 300 TIGRunner is a fully featured, professional-grade AC/DC TIG and Stick welding system packaged with a dedicated cart and cooling solution. Combining performance, flexibility, and portability, it’s ideal for industrial and mobile welding applications where precision, reliability, and ease of use matter.
?? Key Features & Advantages
Complete System with Runner & Cooler — The TIGRunner package includes the Dynasty 300 power source, Coolmate™ 1.3 water cooler, and a Small Runner™ cart for mobility.
Auto-Line™ Voltage Compatibility — Supports 208–600 V input (single- or three-phase) without the need for manual linking, simplifying connections on varied job sites.
Full AC / DC TIG & Stick Modes — Weld aluminium with AC mode, switch to DC for steel, exotic metals, and perform stick (SMAW) welding as needed.
4.5" LCD User Interface & Program Memory — Clear on-screen setup guidance and the ability to store/recall up to 99 weld programs for repeatability.
Pro-Set™, Locks & Limits — Preset parameter modes and the ability to lock parameter ranges help ensure consistency and reduce setup errors.
Advanced AC / DC Waveform Control
• In AC mode: choose from several waveforms (square, soft square, sine, triangle), adjust balance and frequency for oxide removal and arc shaping.
• In DC / pulsed mode: deliver a stable, precise arc for exotic metals, overlay work, or thickness control.
Lift-Arc™ & HF / Blue Lightning™ Start Options — Enables arc initiation without touching the workpiece. HF / Blue Lightning offers reliable non-contact starts even in challenging conditions.
Cooler-On-Demand™ & Integrated Cooler Power Supply (CPS) — Cooling is activated only when needed, reducing noise and energy usage. The machine includes a dedicated power supply for the Coolmate 1.3.
Lightweight & Portable — Approximately 25 kg net weight, making it manageable for both workshop and field use.
Strong Duty Cycle & Output — 1–300 A in DC mode, 2–300 A in AC mode. Typical output includes 250 A at 60 % duty cycle.
3-Year True Blue Warranty — Backed by Miller’s support and reliability promise
