Thomas & Betts 1440 1/2" Threa...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,490.20
Thomas & Betts 1440 1/2" Threaded Malleable Iron Panel Connector Extension, Pack of 100

Thomas & Betts 1440 1/2" Threaded Malleable Iron Panel Connector Extension, Pack of 100

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Model: TB1440

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

$1,490.20
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Thomas & Betts 1440 1/2" Threaded Malleable Iron Panel Connector Extension

The Thomas & Betts 1440 is a 1/2" Panel Connector Extension machined from durable Malleable Iron and engineered to extend the reach of a threaded panel connector through a thick panel wall, cabinet, or enclosure. When panel thickness exceeds the length of a standard connector, this extension gives electricians the added depth needed to properly seat the locknut and complete a secure conduit-to-panel termination. Sized to match standard 1/2" threaded panel connectors and conduit hardware, the Thomas & Betts 1440 threads directly onto existing connector hardware without special tools. Built to Thomas & Betts standards for fit and function, it is a dependable solution for maintaining secure conduit connections on panels, cabinets, and enclosures where extra reach is required.

Key Features

  • Trade Size: 1/2" sizing matches standard panel connectors and conduit hardware for straightforward, drop-in installation without adapters.
  • Durable Construction: Malleable Iron construction delivers the strength, impact resistance, and long-term durability needed for demanding panel, cabinet, and enclosure applications.
  • Extension Design: Purpose-built to extend a panel connector's reach through thicker panel walls, giving the locknut enough exposed thread to fully engage and lock down the connection.
  • Threaded Compatibility: Pairs directly with standard 1/2" threaded panel connectors to complete a secure, properly seated conduit-to-panel termination.
  • Reliable, Consistent Fit: Helps maintain a tight, secure conduit connection on panels, cabinets, and enclosures where added connector depth is required.
  • Professional-Grade Fitting: Sized and built to Thomas & Betts standards for consistent fit and function in commercial and industrial electrical work.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Panelboard and Enclosure Conduit Terminations
  • Extending Panel Connectors Through Thick Panel Walls
  • Commercial and Industrial Electrical Installations
  • Conduit and Raceway Systems
  • Cabinet and Enclosure Wiring
  • Renovation and New Construction Panel Wiring

Why Thomas & Betts?

Thomas & Betts builds the 1440 Panel Connector Extension from Malleable Iron for the strength and reliability professional electricians rely on in the field. This 1/2" threaded extension helps ensure panel connectors seat and lock down securely even on thicker panels or enclosure walls, supporting dependable, properly terminated conduit installations across commercial, industrial, and renovation projects. Consistent 1/2" sizing paired with rugged Malleable Iron construction gives electricians a simple way to solve thick-panel termination challenges without swapping out an entire connector assembly.

Manufacturer Resources

Product Specs

list_batch:
TB-20260918
Product Type:
Panel Connector Extensions
Connection Type:
Threaded
Department:
Electrical
Product Subgroup:
Conduit Fittings
Product Material:
Malleable Iron
Product Size:
1/2"
Pack size (unit):
100
Product Group:
Conduit & Raceway

Thomas & Betts TB1440 – Frequently Asked Questions

1) What does a panel connector extension like the Thomas & Betts 1440 actually do?
The 1440 extends the reach of a threaded 1/2 inch panel connector through a thick panel, cabinet, or enclosure wall. When the wall is thicker than the connector's threaded length, there isn't enough exposed thread left inside for the locknut to pull up tight. Threading the extension onto the connector gives you that extra depth so the locknut fully engages and the conduit-to-panel termination seats properly. It solves the problem without replacing the whole connector assembly.
2) Will the Thomas & Betts 1440 thread onto my existing 1/2 inch conduit connector?
Yes. The 1440 is a threaded fitting sized to 1/2 inch trade size, so it threads directly onto standard 1/2 inch threaded panel connectors and conduit hardware with no adapter and no special tools. If your connector is a different trade size, this one won't mate, you'd need the matching size extension.
3) Is the 1440 malleable iron or die cast zinc?
Malleable iron. That gives it the impact resistance and thread strength electricians want on panel and enclosure terminations, and it holds up better than a soft die cast body when a locknut is torqued down hard.
4) How many pieces come in a pack of the Thomas & Betts 1440?
It ships 100 pieces to the pack. That's a stocking quantity for a contractor or MRO crib doing panel and enclosure work, not a single-piece buy, so figure on 100 extensions per order unit.
5) Do I need a 1/2 inch panel extension, or should I just use a longer connector?
Use the extension when the connector you already have is the right type for the raceway and only the panel wall depth is the problem. The 1440 adds thread depth so the locknut can seat, which is cheaper and faster than pulling and replacing the entire connector assembly. If the connector itself is wrong for the application (wrong cable or conduit type, wrong trade size), swap the connector instead, an extension won't fix that.
6) What part number do I give my supplier for the Thomas & Betts 1/2 inch panel connector extension?
Thomas & Betts part number 1440. One model covers this item, there is no handing, finish, or length option to specify, just confirm the 1/2 inch trade size matches your connectors.
7) Can the 1440 extension be used on enclosures and cabinets, not just panelboards?
Yes. It's intended for conduit terminations into panelboards, cabinets, and enclosures wherever the wall is thicker than a standard connector's threads reach, in commercial and industrial work as well as renovation and new construction panel wiring.
How fast can I get the Thomas & Betts TB1440 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 TB1440 come with a warranty?
Absolutely. The Thomas & Betts TB1440 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 TB1440?
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 TB1440 from ZenSupply?
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