907696 - Miller CST 280 Stick/TIG Welder with Tweco Connectors & Meter

Reliable Construction Welding Power

The Miller CST™ 280 is designed specifically for the rigorous demands of the construction and pipe fabrication industries. This model (907696) comes equipped with Tweco-style connectors and a digital meter, ensuring compatibility with existing cable sets and providing precise feedback for critical welds. Known for its durability and performance, the CST 280 delivers superior Stick (SMAW) arc characteristics, making it a favorite for welding pipe and plate in the field.

Superior Stick and TIG Performance

At the heart of the CST 280 is an inverter power source capable of delivering up to 280 Amps of welding output. It excels with difficult-to-run electrodes such as E6010, providing a stable and controllable arc that pipe welders rely on. For TIG (GTAW) applications, the machine features Lift-Arc™ technology, which allows for smooth arc initiation without the use of high frequency, minimizing the risk of weld contamination or interference with sensitive electronics nearby.

Multi-Voltage Versatility

Flexibility on the job site is critical. The CST 280 features a simple voltage changeover switch on the rear panel, allowing it to operate on a wide range of input power: 220-230V, 460-480V, or 575V. It supports both single-phase and three-phase input, ensuring you can plug in and weld virtually anywhere power is available. This versatility reduces downtime and eliminates the need for multiple machines for different sites.

Compact and Portable

Weighing in at just 41 lbs (18.6 kg), this machine is easily transported by a single operator around the job site. Despite its small footprint (13.5" H x 7.5" W x 18" L), it does not compromise on power or duty cycle, offering 280A at 35% duty cycle on three-phase power. The unit is also compatible with Miller's 4-pack and 8-pack racks, making it an excellent choice for large-scale infrastructure projects where multiple arcs are needed in a concentrated area.