K940-25 - Lincoln Electric STT Voltage Sensing Lead 25ft

Optimize Your STT Welding Performance

Unlock the full potential of your Lincoln Electric power source with the K940-25 Sense Lead Kit. This 25-foot accessory is not just a cable; it is the nervous system of your STT (Surface Tension Transfer) welding setup. When welding with advanced processes, the machine needs to know exactly what is happening at the arc to control the heat input and droplet transfer effectively. Standard ground setups can introduce voltage drops that mislead the power source, resulting in erratic arcs and suboptimal welds.

The K940-25 solves this problem by creating a direct sensing line from the work piece back to the welder. This allows compatible machines, such as the Invertec STT II and select Power Wave models, to compensate for cable length and resistance instantly. The result is a smoother arc, better fusion, and the high-quality finish that STT is famous for. It is especially crucial when working with long lead setups where voltage drop is more pronounced.

Rugged and reliable, this sense lead is designed for the shop floor. The 25-foot length offers ample flexibility for positioning around large weldments without sacrificing signal integrity. If your application demands precision—such as pipe welding, automotive fabrication, or critical structural work—ensure your equipment is receiving the accurate data it needs with the Lincoln Electric K940-25.