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ABB Universal Raintight Conduit Hub, Outdoor Enclosure Rated
The ABB Universal Raintight Hub is engineered as a secure, weather-resistant connection point between conduit and ABB load centers or panels in outdoor enclosures. This hub family is offered in a variety of sizes to match different conduit and enclosure requirements — for example, the TC125 variant has a 1.25" diameter with a 3" base size. Each hub ships individually packaged (1 EA) and is built to keep moisture out of enclosures in outdoor and wet-location electrical installations, making it a dependable choice for raintight conduit terminations. Because the hub is purpose-built for ABB load center and panel enclosures, electricians can standardize on a single, code-conscious hub family across multiple outdoor projects rather than sourcing mismatched fittings.
Key Features
- Raintight Design: Rated for outdoor enclosures, helping prevent water intrusion at conduit-to-enclosure connections and protecting internal wiring from the elements.
- Universal Sizing: Offered in a variety of sizes to fit different ABB load centers or panels, such as the 1.25" diameter, 3" base TC125 configuration, so the correct hub is available for the conduit and enclosure on hand.
- Load Center Compatibility: Purpose-built to pair with ABB load centers and panels for consistent, code-conscious installations, reducing guesswork when matching hubs to enclosures.
- Individually Packaged: Supplied 1 EA per package for straightforward stocking and job-site use, simplifying inventory management for electrical contractors.
- Wet-Location Ready: Constructed to support raintight terminations in outdoor and wet-location settings, keeping enclosures dry through changing weather conditions.
- Secure Conduit-to-Enclosure Seal: Provides a dependable mechanical connection point that maintains a raintight seal between the conduit run and the enclosure wall.
Certifications & Compliance
- Raintight Rated for Outdoor Enclosures
- Suitable for Wet-Location Conduit Terminations
Technical Specifications
- Product Type: Hub
Typical Applications
- Outdoor Electrical Enclosures
- ABB Load Center and Panel Wiring
- Conduit-to-Enclosure Raintight Terminations
- Wet-Location Conduit Installations
- Renovation and New Construction Electrical Work
Why ABB?
ABB engineers its raintight hubs to deliver a dependable, weather-resistant seal between conduit and enclosure, supporting reliable performance across outdoor and wet-location electrical work. With universal sizing to match ABB load centers and panels — including sizes such as the 1.25" diameter, 3" base TC125 configuration — this hub family simplifies sourcing for electricians who need a consistent, code-conscious fit across a range of projects. Individually packaged units make it easy for contractors and distributors to stock exactly the quantity a job requires, while the raintight rating helps ensure enclosures stay protected from moisture long after installation.
Manufacturer Resources
Spec Sheet
Product Specs
- Product Type:
- Hub
- Department:
- Electrical
- Product Group:
- Conduit & Raceway
- Product Subgroup:
- Conduit Fittings
ABB TC125 – Frequently Asked Questions
1) What size conduit does the ABB TC125 raintight hub take?
The TC125 is the 1.25 inch size in ABB's universal raintight hub family, with a 3 inch base. Match the hub size to the trade size of the conduit run coming into the enclosure, and make sure the enclosure opening accommodates the 3 inch base footprint.
2) Can I use an ABB raintight hub on an outdoor load center in a wet location?
That is exactly what it is built for. The ABB universal raintight hub makes the conduit-to-enclosure connection on outdoor ABB load centers and panels, and it is rated raintight for outdoor enclosures and suitable for wet-location conduit terminations. It keeps water out at the point where the conduit lands on the enclosure wall.
3) Is the ABB TC125 hub meant for ABB panels only, or will it work on any enclosure?
ABB builds this hub family to pair with its own load centers and panels, which is why the sizing is published against those enclosures. If you are hubbing a Square D enclosure instead, ZenSupply carries Square D's own hubs, including the B Series bolt-on rainproof hub and the Series A Meter Pak rainproof hub accessory.
4) What is the Square D equivalent of the ABB TC125 raintight hub?
The closest Square D counterparts are the B Series Bolt-On Hub, a rainproof hub in the Square D B Series, and the Series A Meter Pak Hub Accessory, also rainproof. The ABB TC125 is a universal raintight conduit hub built to seal conduit-to-enclosure connections on ABB load centers and panels, with a 1.25 inch diameter and a 3 inch base. The practical difference is the enclosure family each one is matched to: the ABB hub is purpose-built for ABB load centers and panels, while the Square D hubs are tied to Square D's B Series and Series A Meter Pak enclosures. Confirm which brand of load center or meter socket is on the wall before ordering, since hub-to-enclosure fit is enclosure-specific.
5) I am terminating conduit into a meter socket, not a load center - should I use the ABB TC125 hub?
For a meter socket, look at the Square D Series A Meter Pak Hub Accessory, which is a rainproof hub accessory made for the Meter Pak line. The ABB TC125 universal raintight hub is purpose-built to pair with ABB load centers and panels rather than meter sockets, so it is the right part when the conduit is landing on an ABB load center or panel enclosure outdoors. Both are intended for weather-exposed terminations, so the decision comes down to which enclosure the hub has to mount to.
6) Can I substitute a Square D B Series bolt-on hub on an ABB load center?
Treat them as separate systems rather than drop-in substitutes. The Square D B Series Bolt-On Hub is a rainproof hub within Square D's B Series, and the ABB TC125 is a universal raintight hub built specifically to pair with ABB load centers and panels so the hub matches the enclosure opening and keeps the seal. If the enclosure on the job is an ABB load center or panel, the ABB hub family is the matched fitting; a Square D hub is the matched fitting for a Square D enclosure. Standardizing on one hub family per enclosure brand avoids mismatched fittings across a fleet of outdoor installs.
7) What is the difference between an ABB raintight hub and a Square D Meter Pak hub?
Both seal a conduit entry on an outdoor enclosure, but they are matched to different equipment. The ABB hub is sized against ABB load centers and panels. The Square D Series A unit is a Meter Pak hub accessory and the Square D B Series is a bolt-on hub, each rainproof and intended for Square D gear. Pick the hub that matches the brand of enclosure you are landing conduit on rather than mixing fittings across manufacturers.
8) Do I still need a raintight hub if I am running conduit into the top of an outdoor panel?
Yes. A top entry on an outdoor enclosure is the spot most likely to let water in, and that is the joint this hub is made to close. It provides the mechanical connection between the conduit run and the enclosure wall while holding a raintight seal, so the wiring inside stays dry.
9) Is a rainproof hub the same thing as a raintight hub for an outdoor panel?
They are described differently by the two manufacturers. The ABB TC125 is a raintight hub, built for raintight conduit terminations into outdoor and wet-location enclosures on ABB load centers and panels. The Square D B Series Bolt-On Hub and the Series A Meter Pak Hub Accessory are both described as rainproof. If the drawing or inspector calls out a specific term, match the wording on the fitting to the wording on the spec, and match the hub to the enclosure brand it bolts to.
10) How is the ABB TC125 hub packaged if I only need one for a job?
Each hub ships individually, one per package. That suits both a single service change and a contractor stocking a van by size rather than buying a carton.
How fast can I get the ABB TC125 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 TC125 come with a warranty?
Absolutely. The ABB TC125 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 TC125?
You can call, text, or email our expert support team for fast answers. We’re here to help with
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selection,
installation tips, and troubleshooting. Contact Us
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