TIG Foot Pedal for HTP Invertig 251 and Miller Welders: Sizing Guide
By MIG/TIG/Stick Welders & Plasma Cutters | USA Weld – HTP ... | Published: 2026-11-01
Category: Buying Guides
Choose the right TIG amperage control pedal for your HTP Invertig 251, Miller, Hobart, or Longevity welder. Compare 12.5-foot vs 25-foot cables and confirm 14-pin compatibility before you buy.
Quick answer
For an HTP Invertig 251, Miller RFCS-14 compatible machines, Hobart, or Longevity 200SX, choose the 12.5-foot pedal when you weld at a fixed bench and the 25-foot pedal when you need to move around the shop. Confirm your welder's 14-pin remote connection and build date before ordering.
Why cable length changes your welding setup more than the pedal itself
The pedal's electronics are the same in both lengths; the difference is where you can stand and how much cable you manage. A 12.5-foot cable keeps the run short and tidy at a welding table, which reduces tripping hazards and makes it easier to coil and store. A 25-foot cable gives you room to walk around a larger fabrication or repair job, but it also needs a clear path and a place to coil the extra length so it does not lie in the work zone.
If you usually weld at one bench, the shorter cable is the practical choice. If you work on trailers, gates, or large assemblies that cannot come to the table, the longer cable saves you from moving the machine or adding extension cords.
Compatibility is more than the connector shape
A 14-pin remote connection is the common thread across the HTP Invertig 251, Miller RFCS-14 and RFCS-14HD equivalents, Hobart RFCS-14, and Longevity 200SX. But Miller machines produced after April 2023 may not be able to use this replacement pedal, according to the product listing. That date caveat matters because a pedal that fits an older Miller welder may not work on a newer one even though the connector looks the same.
Check your welder's model, serial plate, and build date before ordering. If you have a post-April 2023 Miller, verify compatibility with the manufacturer or choose a pedal specifically listed for your machine rather than assuming the 14-pin plug is enough.
When a foot pedal is the wrong control for your work
A foot pedal suits bench work where you can sit or stand with both hands free for the torch and filler. It is less convenient for out-of-position welding, ladder work, or tight spaces where a hand control or torch-mounted amperage control is easier to reach. If you frequently weld away from a stable floor position, consider a hand control instead of a pedal.
Also think about your welding process: this pedal is intended for TIG amperage control on the listed machines, not for MIG or stick welding. Match the control to the process you actually run.
Decision rules for choosing your TIG foot pedal
- Measure your working radius: If your welder sits at a bench and you never move more than a few feet from it, pick the 12.5-foot pedal. If you need to reach around a large workpiece or move between stations, pick the 25-foot pedal. A cable that is too short forces you to move the welder; a cable that is too long becomes a trip hazard if not managed.
- Verify the 14-pin remote connection: Confirm your welder has a 14-pin remote receptacle and that your model appears on the compatibility list: HTP Invertig 251, Miller RFCS-14/RFCS-14HD equivalents, Hobart RFCS-14, or Longevity 200SX. A matching plug shape does not guarantee the pinout is compatible.
- Check the build date on Miller machines: If you own a Miller welder built after April 2023, do not assume this pedal will work. Contact the manufacturer or a specialist to confirm compatibility before ordering. Newer Miller machines may require a different pedal or adapter.
- Match the control to your welding position: Choose a foot pedal for bench work where you can stand or sit with both hands free. If you weld out of position, on ladders, or in tight spaces, consider a hand control or torch-mounted amperage control instead. The best amperage control is the one you can reach safely in your typical welding position.
Product facts
- 12.5' or 25' Foot Pedal for HTP® Invertig 251, Miller®, Longevity & Hobart® TIG Welders: Replacement foot pedal available in 12.5-foot or 25-foot lengths with a 14-pin remote connection. Lets you choose the cable length that matches your shop layout instead of adapting to a fixed length.
12.5' or 25' Foot Pedal for HTP® Invertig 251, Miller®, Longevity & Hobart® TIG Welders - 12.5' or 25' Foot Pedal for HTP® Invertig 251, Miller®, Longevity & Hobart® TIG Welders: Compatible with HTP Invertig 251, Miller RFCS-14 (P/N 043 554) and RFCS-14HD (P/N 194 744 or 301859), Hobart RFCS-14 (P/N 043 554-01-1), and Longevity 200SX. Covers several common TIG welders with one replacement part, but you still need to confirm your specific model and build date.
- 12.5' or 25' Foot Pedal for HTP® Invertig 251, Miller®, Longevity & Hobart® TIG Welders: Brand new Miller machines produced after 4/2023 might not be able to use this pedal. Prevents a wasted purchase if you own a recent Miller welder; check the build date before ordering.
Who this pedal is for
Best for
- HTP Invertig 251 owners who want a replacement or spare foot pedal
- Miller RFCS-14 or RFCS-14HD compatible welders built before April 2023
- Hobart RFCS-14 and Longevity 200SX owners needing a 14-pin pedal
- Bench TIG welders who want precise amperage control with both hands free
Not for
- Miller welders produced after April 2023 without confirmed compatibility
- Welders that do not use a 14-pin remote connection
- Out-of-position work where a hand control is safer and more practical
- MIG or stick welding processes
