ABB Panelboard Breaker Knockou...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$4.55
ABB Panelboard Breaker Knockout Filler Plate

ABB Panelboard Breaker Knockout Filler Plate

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Model: TFH

In Stock (leaves warehouse same day if ordered before 3pm ET)

$4.55
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ABB Panelboard Breaker Knockout Filler Plate

The ABB panelboard breaker knockout filler plate is designed to cover unused rectangular breaker knockouts on panelboard and load center enclosures, helping maintain a clean, enclosed, code-conscious panel front. This filler plate is sized to cover 1/2" rectangular breaker knockouts, making it a practical accessory for electricians finishing out panel installations or servicing existing panelboards where a breaker position has been removed or was never populated. Each unit ships individually packaged for straightforward stocking and installation on the job site.

Key Features

  • Knockout Coverage: Sized to cover 1/2" rectangular breaker knockouts, closing off unused breaker positions on the panel front.
  • Purpose-Built Fit: Engineered as a front filler plate specifically for panelboard and load center breaker openings, helping restore a finished appearance to the enclosure front.
  • Simple Installation: Designed as a straightforward cover solution for unused knockouts without requiring additional hardware modifications.
  • Single-Unit Packaging: Packaged 1 EA for easy individual stocking, ordering, and replacement as panel configurations change.
  • ABB Build Quality: Manufactured by ABB for use in professional electrical panelboard applications.

Technical Specifications

  • Packaging: 1 EA
  • Knockout Size Covered: 1/2" rectangular breaker knockout

Typical Applications

  • Panelboard and Load Center Finishing
  • Covering Unused Breaker Knockouts
  • Commercial and Industrial Electrical Panel Maintenance
  • Panel Renovation and Breaker Position Changes
  • New Panelboard Construction and Buildout

Why ABB?

ABB supplies electrical distribution components used across commercial and industrial installations, and this front filler plate is built to fit 1/2" rectangular breaker knockouts for a clean, finished panel front. Choosing an ABB filler plate helps ensure panelboard openings are properly closed off as part of a professional, code-conscious installation, and single-unit packaging makes it easy for electricians to keep the right quantity on hand for panel service and buildout work.

Manufacturer Resources

Spec Sheet

Product Specs

Product Type:
Filler Plate
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Parts & Accessories

ABB TFH – Frequently Asked Questions

1) What size knockout does the ABB TFH filler plate cover on a panelboard?
The ABB TFH filler plate covers 1/2 inch rectangular breaker knockouts on panelboard and load center fronts. If the opening you are closing is a round knockout or a larger multi-pole opening, this is not the part, and you would want a plate matched to that opening instead.
2) Do I need a filler plate when I pull a breaker out of a panelboard?
Yes. Once a breaker comes out, the opening in the panel front is left exposed and energized parts are reachable through it. The ABB TFH plate closes off that unused 1/2 inch rectangular breaker position so the panel front is fully enclosed again. Property maintenance and MRO crews typically stock a few of these for exactly that reason, since positions change every time a circuit is removed.
3) What is the difference between the ABB TFH filler plate and the Eaton GB/GHB/GHBS filler plate?
Both close an unused single breaker position on a panel front, but they are matched to different equipment. The ABB TFH is sized for 1/2 inch rectangular breaker knockouts on ABB panelboards and load centers. The Eaton plate is built for Eaton's GB, GHB and GHBS breaker series panels. Filler plates are not interchangeable across manufacturers, so match the plate to the brand of panel you are working in.
4) What is the Eaton equivalent of the ABB TFH breaker knockout filler plate?
The closest cross-brand counterpart is the Eaton 5155C62H01, a single pole panel mount filler plate for the Eaton GB/GHB/GHBS breaker series. Both parts do the same job of closing off an unused breaker opening on the panel front. The difference is fit: the ABB TFH is sized to cover a 1/2 inch rectangular breaker knockout on ABB panelboards and load centers, while the Eaton plate is tied to the GB/GHB/GHBS series openings. Filler plates are not universal, so match the plate to the panel brand and breaker series rather than to the plate's general description.
5) Can I use a single pole filler plate from an Eaton panel in an ABB panelboard?
Not reliably. The Eaton 5155C62H01 is built as a panel mount filler plate for Eaton's GB, GHB and GHBS breaker series, and its retention features and opening size follow that series. The ABB TFH is engineered as a front filler plate for ABB panelboard and load center breaker openings sized at 1/2 inch rectangular. Mixing a plate across brands risks a loose or non-seating cover on the deadfront, which defeats the purpose of closing the opening. Order the plate that matches the panel you are working in.
6) Does the ABB TFH filler plate come with screws or other mounting hardware?
The TFH is sold as a straightforward cover for the knockout opening and does not call for additional hardware modifications to install. Plan the job around the plate itself; nothing else is listed as shipping with it.
7) I need to fill several empty breaker spaces in an ABB panel - do I order one part or a kit?
The ABB TFH is packaged 1 EA, so each empty position takes its own plate; order one per 1/2 inch rectangular knockout you are covering. The Eaton 5155C62H01 is likewise a single pole filler plate, so the same one-per-opening math applies on GB/GHB/GHBS panels. For a panel with a row of unused positions, count the openings on the deadfront before ordering.
8) Can I use the ABB TFH filler plate on a new panelboard installation, or is it only for service work?
Both. On new construction the TFH closes off breaker positions that were never populated so the panel front finishes out clean, and on existing equipment it covers a position after a breaker has been removed during renovation or circuit changes. Same part either way.
How fast can I get the ABB TFH delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the ABB TFH come with a warranty?
Absolutely. The ABB TFH is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the ABB TFH?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the ABB TFH from ZenSupply?
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