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Thomas & Betts 2-1/2 Inch Zinc Conduit Hub Connector
Professional Grade Conduit Connection Solution
The Thomas & Betts 2-1/2 inch zinc conduit hub connector delivers reliable conduit-to-enclosure connections for professional electrical installations. Constructed with durable zinc material, this hub connector provides secure attachment points for conduit systems while maintaining proper electrical continuity and mechanical strength in demanding applications.
Professional Features & Benefits
- 2-1/2 Inch Size: Accommodates standard 2-1/2 inch conduit for versatile installation compatibility across various electrical systems.
- Zinc Construction: Provides excellent corrosion resistance and durability for long-lasting performance in indoor and outdoor applications.
- Hub Connector Design: Ensures secure mechanical connection between conduit and electrical enclosures with proper sealing capabilities.
- Professional Grade Quality: Thomas & Betts engineering delivers consistent performance and reliability for commercial and industrial installations.
- Conduit System Integration: Seamlessly connects with standard conduit fittings and electrical enclosures for complete system compatibility.
- Electrical Department Specification: Meets professional electrical installation requirements for proper conduit termination and connection.
Technical Specifications
- Department: Electrical
- Material: Zinc
- Number Of Batteries: 0
- Product Group: Conduit & Fittings
- Product Subgroup: Conduit Hubs
- Product Type: Hub Connector
Professional Applications
- Commercial Electrical Installations
- Industrial Facility Wiring
- Institutional Building Systems
- Professional Office Complexes
- Retail and Service Establishments
- Multi-Unit Residential Properties
- Electrical Panel and Enclosure Connections
Why Choose Thomas & Betts Quality?
Thomas & Betts conduit hub connectors provide the professional reliability and durability required for demanding electrical installations. The zinc construction ensures long-term corrosion resistance while maintaining secure mechanical connections. Trust Thomas & Betts engineering for consistent performance in your conduit and fitting applications.
Manufacturer Resources
Product Specs
- Product Subgroup:
- Conduit Fittings
- Product Type:
- Conduit Hub
- Product Group:
- Conduit & Raceway
- Department:
- Electrical
- Product Material:
- Zinc
- Number Of Batteries:
- 0
Thomas & Betts H250-TB – Frequently Asked Questions
1) What else could I use instead of the Thomas & Betts H250-TB hub in 2-1/2 inch?
Comparable hubs of the same type include the Crouse-Hinds Myers Scru-Tite basic hub, which is also zinc die-cast, the ABB TC Series universal raintight hub, and the American Fittings AH spec-grade hub with an insulated throat and locknut. If the enclosure is set up for a bolt-on hub rather than a threaded one, the Square D B125 Series bolt-on rainproof hub is the different style of mounting.
2) What is the closest equivalent to the Thomas & Betts H250-TB zinc conduit hub?
The Crouse-Hinds Myers Scru-Tite basic hub is the nearest like-for-like choice: it is a zinc die-cast hub, matching the zinc construction of the Thomas & Betts H250-TB and H350-TB hubs. Both are threaded hubs that terminate conduit into an enclosure wall, so the swap comes down to confirming the trade size you need and that the enclosure knockout matches.
3) Is a bolt-on hub the same thing as a threaded conduit hub?
No. The Square D B125 Series hub is a bolt-on design, meaning it fastens to the enclosure with bolts into a matching pattern, typically on specific load center and enclosure families. The Thomas & Betts H250-TB and H350-TB are threaded hub connectors that land in a conduit knockout. They are not interchangeable mounting styles, so check how the enclosure is prepped before ordering either one.
4) Is this Thomas & Betts hub made of zinc or steel?
Zinc. That is the reason it gets specified on outdoor and washdown enclosures, since zinc resists corrosion better than plain steel fittings. If your spec calls for an alloy steel body instead, the American Fittings AH hub is an alloy steel insulated throat hub.
5) Do I need a conduit hub or just a locknut and bushing on my enclosure?
Use a hub when the enclosure needs a sealed, mechanically solid termination, for example a panel or junction box fed with rigid conduit where you want electrical continuity maintained through the connection. A locknut-and-bushing termination is fine inside dry indoor boxes. The Thomas & Betts zinc hub threads onto the conduit and clamps to the enclosure wall as a single assembly, which is why it is the common choice on commercial and industrial panel work.
6) Is a bolt-on hub interchangeable with this threaded Thomas & Betts hub?
They are not the same mounting method. The Thomas & Betts zinc hub is a threaded hub connector that lands in a knockout on the enclosure. A bolt-on type such as the Square D B125 Series fastens to the enclosure with bolts and is matched to that manufacturer's gear openings, so check which style the enclosure is prepped for before substituting one for the other.
7) Which hub should I use when I am pulling conductors without a separate bushing?
The American Fittings AH hub has an insulated throat built in, so the conductor bearing surface is already protected at the hub. The Thomas & Betts H250-TB and H350-TB are zinc hub connectors without a throat liner called out, so an installer who wants insulation at that point would add a bushing. The American Fittings AH is alloy steel with a locknut included rather than zinc.
8) For a job spec that calls for spec-grade fittings, does the Thomas & Betts hub qualify or do I need something else?
If the drawing uses the words spec-grade, the American Fittings AH hub carries that grade designation directly. The Thomas & Betts H250-TB and H350-TB are zinc hub connectors built for commercial and industrial conduit terminations, so they suit most general enclosure work, but a submittal that calls out spec-grade by name is cleanest to satisfy with the American Fittings AH.
9) Where are 2-1/2 and 3-1/2 inch conduit hubs typically used on a commercial job?
Larger trade sizes like these land on service and feeder work: panelboard and enclosure terminations, industrial facility wiring, institutional building systems, retail and office buildouts, and multi-unit residential service equipment. Branch circuits rarely need 2-1/2 inch or above.
10) I stock one hub across several enclosure brands - which option is most flexible?
The ABB TC Series hub is described as universal and interchangeable, which is the angle for a stockroom that wants one part to cover mixed enclosures. The Thomas & Betts side covers 2-1/2 inch and 3-1/2 inch trade sizes in zinc, so standardizing there means stocking by size rather than by enclosure family.
How fast can I get the Thomas & Betts H250-TB delivered?
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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 Thomas & Betts H250-TB come with a warranty?
Absolutely. The Thomas & Betts H250-TB is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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