What are the key specifications of the Miller CST 280 welder?

The CST 280 is a stick/TIG welding power source with an amperage range of 5–280 A for stick and 5–200 A for TIG, weighing only 41 pounds and featuring a maximum open-circuit voltage of 77 VDC. It requires 3- or 1-phase power input and is designed for industrial applications including power plant construction, petrochemical construction, maintenance and repair, and shipbuilding. The unit is portable and can be rack-mounted for protection and transportation of multiple power sources.