9699 - Miller-Compatible 5-Pin TIG Torch Thumb Switch

Technical Overview

The TIG Arc Start Switch Assembly (SKU: 9699) is a specialized remote control interface designed for compatibility with Miller Electric welding power sources utilizing a standard 5-pin Amphenol-style receptacle. This assembly functions as a remote contactor, providing a simple closure signal to initiate the welding arc without the need for a potentiometer-based foot pedal or slide control. It is engineered to bridge the gap between the operator's manual torch manipulation and the machine's output activation.

The unit consists of a ruggedized momentary push-button switch housed in a casing designed to strap or adhere to the handle of standard TIG torches (WP-17, WP-18, WP-26, and similar series). The control cable is terminated with a high-quality 5-pin plug that mates directly with the remote output socket on compatible Miller machines. This configuration is strictly for arc initiation (on/off) and does not provide amperage control, making it ideal for applications where machine settings are fixed, or where the operator cannot maintain contact with a foot control.

Compatibility and Application

This switch assembly is an essential component for industrial MRO operations involving field repairs, maintenance on large structures, or welding in confined spaces. By transferring the arc start function to the torch handle, it eliminates the trip hazard and logistical constraint of a floor-mounted pedal. The wiring configuration is specific to the Miller 5-pin standard, ensuring immediate functionality upon connection. The switch mechanism is rated for the low-voltage control signals typically used in solid-state welding power sources.