Authorized ABB Distributor (Installation Products)
ABB - Installation Products TK128A - Set Screw Coupling, Concrete Tight, Conduit Size 3 Inches, Length 4.500 Inches, Material Zinc Plated Steel, For use with EMT Conduit
More images

ABB Installation Products TK128A Set Screw Coupling, Concrete Tight, Conduit Size 3 Inches, Length 4.500 Inches, Material…

UPC: 785991025538


Documents & Media
Specification SheetManufacturer Product Website

Contact for Pricing

Minimum Qty: 5

Multiplier: 5

*Contact for lower quantities*

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The ABB TK128A Set Screw Coupling is a zinc-plated steel coupling designed for secure, concrete-tight connections in electrical conduit systems. Engineered for 3-inch EMT (Electrical Metallic Tubing) conduit, this coupling ensures a reliable fit for industrial and commercial applications. The zinc plating provides corrosion resistance, extending lifespan in harsh environments. With a 4.5-inch length, it offers ample coverage for secure conduit connections. The coupling features a nylon insulated throat, reducing wire pulling effort by up to 50% and preventing insulation thinning or first thread damage. The hardened hex head cup point screw ensures positive holding strength and ground continuity, while the captive screw design prevents vibration loosening. Suitable for concrete-tight applications, the TK128A can carry ground fault currents up to 20,000 amps RMS. This coupling is ideal for applications where conduit must be embedded in concrete or exposed to moisture, ensuring long-term reliability and performance.
  • Zinc-plated steel construction for corrosion resistance in harsh environments
  • 3-inch EMT conduit compatibility with 4.5-inch length for secure connections
  • Nylon insulated throat reduces wire pulling effort by up to 50%
  • Hardened hex head cup point screw ensures positive holding strength and ground continuity
  • Captive screw design prevents vibration loosening in industrial applications

Specifications

Application
For use with EMT Conduit
Color
Zinc Plated
Connection Type
Set Screw
Current Rating
20000 A
Finish
Zinc Plated
Material
Zinc Plated Steel
Material
Steel
Material Quality
Steel
Series
TK
Size
3 Inches
Special Features
Concrete tight when taped
Standard
UL E16592
Type
EMT Conduit Fittings
Package Dimensions (L x W x H)
0.01 IN x 0.01 IN x 0.01 IN
Package Dimensions (L x W x H)
0.0254 cm x 0.0254 cm x 0.0254 cm
Package Weight (Imperial)
1.380 L
Package Weight (Metric)
0.626 kg
Set Screw Connector, Concrete Tight, Conduit Size 3-1/2 Inches, Length 3.906 Inches, Material Zinc Plated Steel, For use with EMT Conduit

TC129A

Set Screw Connector, Concrete Tight, Conduit Size 3-1/2 Inches, Length 3.906 Inches, Material Zinc Plated Steel, For use with EMT Conduit
Connector, Set Screw, Steel, Insulated Throat, Size 2-1/2 Inch

236-I

Connector, Set Screw, Steel, Insulated Throat, Size 2-1/2 Inch
Set Screw Coupling, Concrete Tight, Conduit Size 4 Inches, Length 4.906 Inches, Material Zinc Plated Steel, For use with EMT Conduit

TK1210A

Set Screw Coupling, Concrete Tight, Conduit Size 4 Inches, Length 4.906 Inches, Material Zinc Plated Steel, For use with EMT Conduit
One Hole Snap Strap, Conduit Size 1-1/2 Inch, Length 3.16 Inches, Width 0.99 Inches, Material Stainless Steel, For use with EMT Conduit

TS105-SS

One Hole Snap Strap, Conduit Size 1-1/2 Inch, Length 3.16 Inches, Width 0.99 Inches, Material Stainless Steel, For use with EMT Conduit
Set Screw Connector, Concrete Tight, Conduit Size 1/2 Inch, Length 1.365 Inches, Material Zinc Plated Steel, For use with EMT Conduit

TC121A

Set Screw Connector, Concrete Tight, Conduit Size 1/2 Inch, Length 1.365 Inches, Material Zinc Plated Steel, For use with EMT Conduit
Set Screw Coupling, Concrete Tight, Conduit Size 2 Inches, Length 3.187 Inches, Material Zinc Plated Steel, For use with EMT Conduit

TK126A

Set Screw Coupling, Concrete Tight, Conduit Size 2 Inches, Length 3.187 Inches, Material Zinc Plated Steel, For use with EMT Conduit
Set Screw Connector, Concrete Tight, Conduit Size 3 Inches, Length 3.641 Inches, Material Zinc Plated Steel, For use with EMT Conduit

TC128A

Set Screw Connector, Concrete Tight, Conduit Size 3 Inches, Length 3.641 Inches, Material Zinc Plated Steel, For use with EMT Conduit
Compression Coupling, Concrete Tight, Conduit Size 3/4 Inch, Length 1.660 Inches, Material Zinc Plated Steel, For use with EMT Conduit

TK112A

Compression Coupling, Concrete Tight, Conduit Size 3/4 Inch, Length 1.660 Inches, Material Zinc Plated Steel, For use with EMT Conduit

Frequently Asked Questions

What is the main feature of these EMT fittings for inspection?

These fittings have a distinctive design and a vibrant gold gland nut, allowing inspectors to visually check conformance from a distance without close-up inspection.

When is a sealing ring required for installation?

A sealing ring is required when the fitting is used outside, or on the top and sides of an enclosure.

What certifications do these EMT fittings have?

These EMT fittings are UL Listed and CSA Certified.

Are the EMT fittings corrosion-resistant?

Yes, the fittings are corrosion-resistant due to their zinc-chromatic plating.

What is the screw design for these fittings?

The screws are designed for exceptional pullout resistance and are captive, ensuring they remain intact for installation and resist backing out.

Are these EMT fittings available in insulated versions?

Yes, the fittings are available with either an insulated or non-insulated throat, offering flexibility for different applications.

Do these EMT fittings require locknuts for installation?

No, these fittings feature a simple, one-piece installation design that does not require the use of locknuts.

What torque is required for installation?

Install using 35 in./lb. of torque onto the Electrical Metallic Tubing (EMT) with either a slotted or Phillips screwdriver.

What certifications do these EMT fittings have?

These EMT fittings are UL Listed and CSA Certified.

When is a sealing ring required for installation?

A sealing ring is required when the fitting is used outside, or on the top and sides of an enclosure.

Frequently Asked Questions about ABB - Installation Products

How are Thomas and Betts products typically installed?

Thomas and Betts products are installed using a variety of methods tailored to specific applications, including the use of flexible cords and cable fittings, non-metallic cable glands, and armored cable fittings. Proper selection of fittings is crucial to match the cable type and installation environment, ensuring durability and preventing physical damage. Tools such as the Blackburn® Comfort Crimp® and HEX-FLEX® systems enhance installation efficiency and reliability, reducing labor time and ensuring secure connections.

What accessories are available for Thomas and Betts products?

Thomas and Betts offers a comprehensive range of accessories for their products, including various cord and cable fittings, non-metallic cable glands, service entrance cable fittings, and armored cable fittings. Their accessories are designed to enhance installation efficiency and ensure compatibility with different cable types and environmental conditions, providing reliable connections for a wide array of applications.

What environmental ratings do Thomas and Betts products have?

Thomas and Betts products feature robust environmental ratings, including NEMA Type 1, 2, 3, 4, 4X, 12, and 13 certifications, as well as IEC 60529 IP66 protection. These ratings ensure that their products are designed to withstand harsh industrial environments, with capabilities to resist dust, water, and corrosion, and operate effectively in a wide temperature range.

What communication protocols do Thomas and Betts products support?

Thomas and Betts products support a wide range of industrial communication protocols, including Ethernet, DeviceNet, PROFIBUS, Modbus, CANopen, and others. This extensive compatibility ensures seamless integration and reliable communication across various industrial automation systems, catering to diverse application needs.

What are the key features of Thomas and Betts products?

Thomas and Betts products are known for their innovative designs, high performance, and compliance with industry standards such as the National Electrical Code and Underwriters' Laboratories. They offer a comprehensive range of rugged and reliable electrical fittings, including liquidtight and dust-tight connections, which enhance installation efficiency and reduce overall project costs. Their products are engineered for durability in harsh environments, ensuring long-term reliability and lower installed costs.

What are the main product lines offered by Thomas and Betts?

Thomas and Betts offers a comprehensive range of product lines including electrical connectors, cable management systems, grounding and bonding solutions, and industrial automation components. Their products are designed for durability and reliability in demanding industrial environments, ensuring optimal performance and safety across various applications.

What technical support does Thomas and Betts offer?

Thomas and Betts offers comprehensive technical support, including access to field application engineers for onsite training and installation assistance. Their technical support staff is available to address inquiries related to product specifications and installation practices, ensuring optimal performance and safety of electrical systems. Additionally, they provide a variety of training programs to enhance the knowledge and skills of users in the field.

What industries and applications are Thomas and Betts products used for?

Thomas and Betts products are utilized across various industries including electrical construction, industrial automation, telecommunications, and utilities. Their extensive range of cord and cable fittings, electrical boxes, and metal framing systems are designed for applications that require durability and reliability in harsh environments, ensuring optimal performance in both permanent and temporary installations.

What certifications and standards do Thomas and Betts products comply with?

Thomas and Betts products comply with critical international certifications including UL (Underwriters Laboratories), CSA (Canadian Standards Association), and CE (European Community). Our products are designed to meet rigorous industrial standards such as NEMA enclosure ratings and IEC 60529 IP ratings, ensuring safety and reliability across various industrial applications.

What are the main product lines offered by Ocal?

Ocal offers a comprehensive range of corrosion-resistant conduit systems, including PVC-coated conduit and fittings, conduit bodies, hazardous location fittings, and strut accessories. Their products are designed to provide superior corrosion protection, featuring a hot-dipped galvanizing process and UL listed Type 4X PVC-coated conduit bodies, ensuring durability in the most demanding environments.