PX9-5522 - Lenco PX9-5522 TIG Torch Momentary Bulb Switch 16-Inch

Product Overview

The Lenco Momentary Bulb Switch (SKU: PX9-5522) is a specialized accessory designed for Gas Tungsten Arc Welding (GTAW) applications. This component serves as a remote contactor control, allowing the operator to initiate and terminate the welding arc directly from the torch handle. The unit features a momentary action mechanism, meaning the circuit remains closed only while pressure is applied to the bulb, ensuring immediate arc termination upon release for safety and process control. The switch is equipped with 16-inch leads, providing sufficient length to route wires to the torch's power cable or control connector.

Technical Specifications and Design

Constructed with a durable, non-conductive rubber housing, the bulb switch is engineered to withstand the harsh environment of industrial welding. The rubber material provides both electrical insulation and mechanical protection against impact, abrasion, and exposure to oils or solvents common in metalworking shops. The internal switching mechanism is designed for low-voltage control circuits typically found in modern welding power sources. The 16-inch two-wire lead is insulated to prevent shorting against the torch body or workpiece. This specific model does not include a potentiometer for amperage control; it is strictly a contactor on/off device.

Installation and Compatibility

The Lenco PX9-5522 is designed as a universal retrofit or replacement part. It does not utilize a proprietary mounting bracket, allowing it to be secured to virtually any TIG torch handle—whether air-cooled or water-cooled—using electrical tape, zip ties, or specialized handle covers. The bare wire ends require termination into the appropriate amphenol plug or control connector matching the specific welding machine being used (e.g., Miller, Lincoln, ESAB). This flexibility makes it an essential inventory item for maintenance and repair operations (MRO) servicing diverse welding fleets.

Operational Utility

In precision welding scenarios where a foot pedal is impractical—such as welding out of position, on ladders, or in confined spaces—a hand-operated switch is indispensable. The bulb design offers distinct tactile feedback, allowing the welder to operate the switch through thick welding gloves without visual confirmation. The momentary nature of the switch supports standard 2T trigger logic, where pressing starts the sequence and releasing ends it, which is the industry standard for manual TIG welding operations.