Miller Dynasty® 400 AC/DC

The Dynasty® 400 is a powerful AC/DC TIG and Stick welding power source designed for demanding fabrication work. It features AutoLine™ for flexible 380–575 V input, LiftArc™ and Blue Lightning™ HF arc starts, and advanced AC controls including balance, frequency and independent amperage for premium Aluminium welding performance. With built-in pulsing, program memory, FanOnDemand™ cooling, and Wind Tunnel Technology™, it delivers exceptional arc stability, reduced heat input and long term reliability across precision, heavy and pipe fabrication applications

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Key Features

Auto-Line allows any input voltage hookup (380–575 V).

Meter calibration for digital meter certification.

Cooler Power Supply (CPS) for Coolmate 3.5.

Wind Tunnel Technology protects electrical components.

Fan-On-Demand cooling system reduces noise and contaminants.

Lift-Arc for AC or DC arc initiation without HF.

Blue Lightning HF arc starter for reliable non-contact arc initiation.

Program memory stores nine parameter sets.

Auto-postflow automatically adjusts based on amperage.

DIG control for stick electrodes.

Hot Start adaptive control.

AC frequency, AC balance and independent AC amperage control.

Advanced AC waveforms: Advanced Squarewave, Soft Squarewave, Sinewave, Triangular Wave.

Exceptionally smooth DC TIG arc.

Extended pulsing ranges for TIG welding.

Specifications

Amperage Range	3–400 A
Rated Output	300 A at 32 V, 60% duty cycle
Max Open Circuit Voltage	75 VDC (10–15 VDC*)
Net Weight (kg)	61
Input Power	380–575 V, 3-phase
Dimensions (mm)	H 629 × W 349 × D 559

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TPS Miller Dynasty 400

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