Quick answer
For select HTP America MIG and TIG welders and most modern Miller TIG welders with a 14-pin remote control, the 25-foot momentary switch with 14-pin plug is a direct-fit replacement. Confirm your welder model and connector type before ordering.
Why the 14-pin plug and 25-foot length matter
The 14-pin plug is the standard remote-control interface on many modern Miller TIG welders and on the listed HTP America models. A switch with this plug connects without adapters, so you avoid wiring changes and keep the factory remote circuit intact.
The 25-foot cord gives you room to move around the workbench or a large fabrication piece without dragging the welder. If you usually weld within a few feet of the machine, a shorter cord may be less cumbersome, but 25 feet is a practical choice for most shop layouts.
When this switch is not the right choice
This switch is not universal. It fits the specific HTP America models listed in the product details and most modern Miller TIG welders that use a 14-pin remote control. Older Miller welders or models with a different connector will need a different switch or an adapter.
If your welder has a built-in amperage control on the torch or a non-standard remote socket, check the manual before ordering. The product listing does not cover every welder ever made, so matching your exact model is the only safe way to confirm fit.
How to choose and install the 25' momentary switch
- Confirm your welder model is listed: Check the product description for your exact welder model. For HTP America, the switch fits Independence 251, Invertig 251, Invertig 221, Invertig 301, Invertig 313, Invertig 400, Pro Pulse 220 MTS, Pro Pulse 300, and Revolution 2500. For Miller, it fits most modern TIG welders with a 14-pin remote control. If your model is not listed, do not assume it fits; contact the seller with your welder's model and serial number.
- Inspect the remote socket on your welder: Look at the remote-control connector on your welder. It should be a 14-pin round socket. If it is a different shape or pin count, this switch will not plug in without an adapter. A 14-pin socket is the key visual check; if you see a different connector, stop and verify compatibility.
- Choose the 25-foot length for your workspace: Measure the distance from your welder to where you typically stand or clamp your work. The 25-foot cord is useful for large projects or when the welder is mounted on a cart away from the table. If you always weld right next to the machine, a shorter cord may be easier to manage. Consider cable management: a 25-foot cord needs a place to coil when not in use.
- Connect the switch to the welder: With the welder powered off, align the 14-pin plug with the remote socket and push it in fully. Tighten any locking collar by hand. Do not force the plug; it should seat smoothly. A partially seated plug can cause intermittent arc starts; double-check it is fully inserted.
- Test the switch function before welding: Turn the welder on and set it to the appropriate TIG mode. Press the momentary switch and listen for the gas solenoid and high-frequency start (if enabled). Release the switch and confirm everything stops. Repeat a few times. If the switch does not trigger the arc or gas, recheck the plug seating and your welder's remote setting.
- Route the cord safely: Run the 25-foot cord away from hot metal, sharp edges, and walkways. Use a cord cover or hang it overhead if possible. Avoid coiling it tightly around the welder while in use, as heat can build up. A damaged cord is a shock hazard; inspect it before each use.
Product facts
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25' Momentary Switch f/Select HTP America® MIG & TIG Welders & Miller® TIG Welders: 25-foot momentary/arc-start switch with 14-pin plug for select HTP America MIG and TIG welders and numerous Miller TIG welders. The 14-pin plug connects directly to compatible welders, and the 25-foot cord gives you freedom to move around the work area.
25' Momentary Switch f/Select HTP America® MIG & TIG Welders & Miller® TIG Welders