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Spec Sheet
Product Specs
- Inner Dimensions Inches:
- 4x5x8
- Inner Quantity:
- 15
- Nominal Cross Section:
- 2 Inch
- Outer Dimensions Inches:
- 9.5x7.25x10.25
- Outer Quantity:
- 30
- Product Group:
- Cable Management & Identification
- Standards:
- UL E23018, CSA
- Unspsc:
- 39131711 Wireway fitting and accessories
- Weight Uom:
- 5.31 lbs. per 100
- Department:
- Electrical
- Product Subgroup:
- Electrical Sleeves
- Product Type:
- Insulating Sleeve
- Product Details:
- Insulating Sleeve
- Product Material:
- Nylon
Thomas & Betts 427-TB – Frequently Asked Questions
1) What conductor size does the Thomas & Betts 427-TB insulating sleeve fit?
The 427-TB is sized for a 2 inch nominal cross section, so it is the sleeve to pull when you are insulating a connector or lug in that range. If your conductor or connector body is a different nominal size, you need the matching part number in the series rather than this one.
2) Is the 427-TB insulating sleeve UL listed for an inspected commercial job?
Yes. The Thomas & Betts 427-TB carries UL file E23018 and is CSA recognized, which is what an inspector or a spec writer on an institutional job is looking for on an insulating component.
3) What material is the Thomas & Betts 427-TB sleeve made of?
Nylon. That is what gives it the dielectric insulation over the connection plus resistance to handling and abrasion in a panel or wireway. It is a mechanical insulating cover, not a heat shrink or tape, so it slips over the joint rather than being heated down.
4) How many Thomas & Betts 427-TB sleeves come in a box?
They pack 15 per inner box and 30 per outer carton, so a full outer is two inners. Useful if you are stocking a truck or an MRO crib and want to know what a case gets you.
5) What is the exact manufacturer part number for the Thomas & Betts 427-TB?
The part number is 427-TB from Thomas & Betts, a nylon insulating sleeve for 2 inch nominal cross section. There is one configuration, so no finish, length, or option suffix to specify when you order.
6) What are the carton dimensions and shipping weight on the 427-TB sleeve?
The inner box measures 4x5x8 inches and the outer carton 9.5x7.25x10.25 inches. Weight runs 5.31 lbs per 100 pieces, so a 30 piece outer is light freight and easy to stage on a job site.
7) Where is a nylon insulating sleeve used instead of tape or heat shrink?
A sleeve like the 427-TB is a slip-on nylon cover for an insulated connection point, typically in wireway, gutter, and panel work. Unlike tape it goes on in one piece and comes back off for inspection or re-termination, and unlike heat shrink it needs no torch or heat gun in a live or confined enclosure.
How fast can I get the Thomas & Betts 427-TB 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 Thomas & Betts 427-TB come with a warranty?
Absolutely. The Thomas & Betts 427-TB 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 Thomas & Betts 427-TB?
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 Thomas & Betts 427-TB from ZenSupply?
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and
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every order.
Our team is always ready to help you choose the right product for your project.