K4273-1 - Lincoln Flextec 350X PowerConnect Multi-Process Welder (Tweco)

Industrial Multi-Process Power Source with PowerConnect Technology

The Lincoln Electric Flextec 350X PowerConnect (K4273-1) is engineered for the most demanding industrial environments, offering unparalleled flexibility and reliability. Designed for construction, shipbuilding, and heavy fabrication, this multi-process welder supports Stick, DC TIG, MIG, Flux-Cored, and Arc Gouging applications. Its defining feature, PowerConnect Technology, automatically senses and adjusts to any incoming power from 200V to 600V, single or three-phase, 50 or 60Hz. This eliminates the need for manual relinking, ensuring seamless operation across various job sites with different power configurations.

Built on a rugged inverter platform, the Flextec 350X is IP23 rated, ensuring durability in extreme outdoor conditions. It features CrossLinc Technology, a proprietary communication protocol that transmits voltage control signals over standard copper welding cables. This innovation allows operators to adjust settings remotely at the wire feeder without the need for fragile and expensive control cables, reducing job site clutter and increasing safety. The unit is also compatible with a wide range of feeders, including 14-pin analog, 5-pin ArcLink digital, and CrossLinc models, providing ultimate system versatility.

For advanced applications, the Flextec 350X PowerConnect includes built-in pulse programs for steel, stainless steel, and aluminum when paired with an ArcLink-capable feeder. The machine delivers a rated output of 350A at 60% duty cycle, with a maximum output of 425A, providing ample power for heavy-duty welding and gouging. Weighing only 84 lbs, it is significantly lighter than traditional transformer-based machines, making it easy to transport and install in racks or on carts. The K4273-1 model comes equipped with Tweco-style output connections for robust performance.