K814-2 - Lincoln Electric K814-2 TIG Torch Finger Switch 12-Pin for Power Wave

Technical Overview of the Lincoln Electric K814-2

The Lincoln Electric K814-2 Arc Start Switch is a specialized control accessory engineered for use with Lincoln Electric Power Wave® welding systems. This device serves as a functional alternative to traditional foot-operated Amptrol™ units, providing operators with the ability to initiate and terminate the welding arc directly from the torch handle. It is specifically designed to interface with the control architecture of Power Wave power sources via a dedicated 12-pin connector, ensuring reliable signal transmission and system compatibility.

The assembly features a 25-foot (7.6-meter) control cable, which significantly extends the operator's working radius relative to the power source. This extended reach is essential for large-scale fabrication or maintenance operations where the welding machine must remain stationary while the operator moves around the workpiece. The switch mechanism itself is constructed to mount securely onto the bodies of standard air-cooled TIG torches, specifically the PTA-9 (125A) and PTA-17 (150A) models. This integration allows for ergonomic actuation without compromising the welder's grip or torch manipulation.

Technically, the K814-2 functions as a contact closure device that triggers the power source's output sequence. It is particularly valuable in industrial environments where floor clutter must be minimized or where the welding position—such as vertical or overhead work on ladders and scaffolding—precludes the use of a floor-mounted pedal. By relocating the start command to the hand, the K814-2 enhances operational safety and versatility in complex welding scenarios.