907552001 - Miller Maxstar 280 Multiprocess DC TIG/Stick/MIG Welder (Tweco)

Miller Maxstar 280 Multiprocess Welder: Precision and Power in a Portable Package

The Miller Maxstar 280 Multiprocess Welder (907552001) is a premier solution for industrial welding professionals who demand versatility without compromising on performance or portability. Weighing in at just 47 pounds, this inverter-based power source redefines what is possible in a compact chassis, delivering up to 280 amps of DC welding output. It is engineered to handle a wide array of processes including DC TIG, Pulsed TIG, Stick, and Air Carbon Arc gouging. Furthermore, when paired with a voltage-sensing wire feeder such as the ArcReach SuitCase, it transforms into a capable MIG and Flux-Cored welding station, making it a true all-in-one solution for steel and stainless steel fabrication.

At the heart of the Maxstar 280 is Miller's proprietary Auto-Line™ Power Management Technology. This feature allows the machine to connect to any input voltage hookup between 208V and 575V, single- or three-phase, with absolutely no manual linking required. This ensures consistent, powerful arcs even when running off dirty or unreliable power found on remote job sites. For TIG welders, the inclusion of Blue Lightning™ high-frequency arc starting provides non-contact arc initiation that is far more reliable than traditional HF starters, ensuring clean starts every time.

Advanced waveform control is standard on this model. The QuietPulse™ technology is activated by changing the waveshape for DC pulse welding, creating a slower, more fluid transition between background and peak amperage. This significantly reduces the audible noise associated with pulse welding, improving operator comfort and safety. Additionally, the Pro-Set™ feature eliminates the guesswork from setting weld parameters by offering professionally optimized settings for Balance, Frequency, Pulse, and DIG, allowing operators to set up faster and weld with confidence.

The unit is equipped with Tweco-style cable receptacles, ensuring compatibility with a broad range of existing welding cables and accessories. With its robust build, including Wind Tunnel Technology™ to protect internal components from airborne contaminants, the Maxstar 280 Multiprocess is built to withstand the rigors of shipbuilding, aerospace, and heavy industrial construction.