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This item is USED. Actual physical appearance of this item may be different than the one pictured however it has been tested and quality checked and works 100% as intended. 


The Miller CST-280 is designed specifically for TIG welding and stick welding. Whether you are performing tungsten inert gas welding or flux shielded arc welding, it produces outstanding results. It's a powerful machine, rated at 280 amps of output, but with a weight of just 41 pounds it can be carried around like a suitcase. It is perfect for rack mounting in tight places and features the primary controls on the front panel for easy accessibility. It is ideal for stick electrodes up to 3/16 inch and for TIG welding pipe and plate. 


    • Power Source
    • 6 ft power cable
    • Male Connectors Stick (SMAW)
    • 41 lb (18.6 kg)
    • 5- 200 Amps- 1 phase
    • 5- 280 Amps- 3 phase
    • 3 ph: 280A @ 31.2V, 35% duty cycle
    • 3 ph: 200A @ 28V, 100% duty cycle
    • 1 ph: 200A @ 28V, 50% duty cycle
    • 1 ph: 150A @ 26V, 100% duty cycle
    • Requires 3- or 1-Phase Power
    • Power Plant Construction
    • Petrochemical Construction
    • Maintenance and Repair
    • Shipbuilding
    • TIG (GTAW)


Adaptive Hot Start technology increases the initial amperage when required to prevent the electrode from sticking and creating an inclusion. 

Two-position manual switch allows for easy voltage changeover between voltage ranges. Voltage change using the Miller Welder CST-280 is very easy, as it is conveniently located on the rear panel.

Simple to operate with a process selector knob which automatically sets the proper dig setting on E6010 and E7018 electrodes providing superior stick performance.

Lift-Arc™ start provides arc starting without the use of high frequency.

Fan-On-Demand™ cooling system operates only when needed providing power efficiency and noise reduction.

Stand-alone or rack-mounted for construction sites. Optional 4-pack racks, commonly used in construction and shipyards, are available for multiple operator applications. All controls including the power switch are located on front of the machine for easy access.

Compatible with Wireless Remote Controls so you can eliminate clutter, cord tangles and the downtime/repair costs that come with cord failure.

Remote amperage control provided through 14-pin receptacle on front of the machine allows use of standard amperage control devices.

Tweco- or Dinse-style connectors available (Dinse-style includes one set of male connectors, Tweco style does not)

CST 280

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