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907550 - Miller Dynasty 280 AC/DC TIG/Stick Welder (Auto-Line 208-575V)

Packaging: 1 PER EA

Sorry, product has been discontinued by the vendor.

OVERVIEW

Industrial Precision with the Miller Dynasty 280

The Miller Dynasty 280 (907550) represents a significant leap forward in portable industrial welding technology. Designed for professionals who demand precision and versatility, this AC/DC TIG and Stick power source is engineered to handle the rigors of aerospace, heavy fabrication, and high-purity processing. At the core of its performance is Miller's proprietary Auto-Line™ Power Management Technology. This innovation allows the machine to accept any input voltage ranging from 208 to 575 V, single-phase or three-phase, without the need for manual linking or internal adjustments. This ensures consistent arc performance even when input power fluctuates, a common challenge on dynamic job sites.

Weighing in at just 52 pounds (23.6 kg), the Dynasty 280 delivers a robust 280 amps of output power, capable of welding materials up to 3/8-inch thick. Its inverter-based design not only reduces weight but also maximizes energy efficiency. The unit features a dedicated Cooler Power Supply (CPS) receptacle, allowing for seamless integration with water-cooling systems without requiring extra cables or external power sources. For operators requiring precise control, the machine offers a wide amperage range starting as low as 1 amp in DC and 2 amps in AC, ensuring stable arcs on thin gauge materials.

The user interface is designed for efficiency, featuring the Pro-Set™ function which eliminates guesswork by providing pre-set professional parameters for balance, frequency, and pulse. This allows operators to set up quickly and focus on weld quality. Whether utilized in a mechanical contracting environment or an educational training facility, the Dynasty 280 provides the reliability and advanced features necessary for high-quality code work.

Additional Information
Brand:Miller
Amperage:280
Voltage:208/575 V
Weld Process:TIG (GTAW)
Duty Cycle:60%
Process Type:AC/DC TIG (GTAW), Stick (SMAW)
Input Phase:1-Phase, 3-Phase
Amperage Range:1 - 280 A (DC), 2 - 280 A (AC)
Net Weight:52 lb (23.6 kg)
Max Open Circuit Voltage:60 VDC
Material Thickness Capacity:0.004" to 3/8"
Dimensions:13.6 in (H) x 8.6 in (W) x 22.5 in (D)
Packaging Description:1 PER EA

INCLUDED

  • Dynasty® 280 Power Source
  • 8 ft. (2.4 m) Primary Cord
  • Adjustable Shoulder Strap
  • (2) 50 mm Dinse-style Connectors
  • Quick Reference Guide

APPLICATIONS

  • Aerospace and Aviation Repair
  • Heavy Equipment Manufacturing
  • Precision Metal Fabrication
  • Aluminum Ship and Boat Building
  • Mechanical Contracting and Pipe Welding
  • Vocational Education and Training
  • Infrastructure and Construction

FAQ

The Dynasty 280 features Auto-Line™ technology, allowing it to operate on any input voltage from 208 V to 575 V, single-phase or three-phase, without manual linking.

No, the base model 907550 includes the power source, cord, strap, and Dinse connectors. TIG torches and foot controls are sold separately or in complete packages.

The machine is rated to weld steel and aluminum up to 3/8 inch (9.5 mm) thick.

Yes, it provides both AC and DC output, making it suitable for welding aluminum, magnesium, stainless steel, and mild steel.

Yes, the Dynasty 280 features a Cooler Power Supply (CPS) receptacle that powers a compatible Miller Coolmate™ water cooler directly from the welder.

It has a rated output of 235 A at 19.4 V with a 60% duty cycle for TIG welding on 3-phase power.

The net weight of the power source is 52 lb (23.6 kg), making it highly portable.

Pro-Set eliminates guesswork by providing pre-configured professional settings for weld parameters like balance and frequency.

CATALOGUE & SPEC SHEETS

Spec Sheet