ABB Installation Products ST250-478S Star Teck steel jacketed fitting. Hub size of 2-1/2 inches. Range over jacket from 2.580…
UPC: 786210877471
Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- Pop-on design eliminates disassembly for faster installation
- Splined gland and gripping features prevent cable pull-out
- Steel construction resists corrosion and mechanical stress
- Compatible with teck and ACWU cables
- Hub size: 2-1/2 inches, jacket range: 2.580-2.840 inches
Specifications
Color | Silver |
Material | Steel |
Size | 2-1/2 Inches |
Standard | UL E38947, CSA 23086, CSA 4484 |
Type | Teck Cable 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) | 5.5000 L |
Package Weight (Metric) | 2.4950 kg |

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What is the minimum throat diameter of the ST250-478S?
The minimum throat diameter for the ST250-478S connector is 2.461 inches.
What NEMA/UL Type rating does the ST250-478S have?
The ST250-478S, with its zinc plated steel body and gland, has a Type 4 rating.
What hazardous locations is the ST250-478S suitable for?
The ST250-478S is suitable for Class I, II, III Div 2 per NEC, Class I, Class II Group EFG, Class III, Ex E IIC, and Class I, Zone 1, AEx E II.
What cable types is the ST250-478S connector listed for?
The ST250-478S connector is listed for Metal Clad Cables (Type MC).
What is the NPT hub size for the ST250-478S?
The NPT hub size for the ST250-478S connector is 2 1/2-8.
What armor range does the ST250-478S connector accommodate?
The ST250-478S connector accommodates an armor range from 2.481 inches minimum to 2.750 inches maximum.
What cable jacket range does the ST250-478S support?
The ST250-478S connector supports a cable jacket range from 2.580 inches minimum to 2.840 inches maximum.
What are the dimensions of the ST250-478S connector?
The ST250-478S has an overall length ("A") of 4.70 in, across corners ("B") of 4 25/32 in, and NPT thread length ("C") of 1.280 in.
What is the NPT hub size for the ST250-478S?
The NPT hub size for the ST250-478S connector is 2 1/2-8.
What is the minimum throat diameter of the ST250-478S?
The minimum throat diameter for the ST250-478S connector is 2.461 inches.
How to Install a Star Teck ST250-478S Cable Fitting
This guide provides step-by-step instructions for the proper installation and sealing of a Star Teck ST250-478S cable fitting, ensuring a secure and compliant connection for armored cables.
Estimated time: 30m
Tools needed:
Hacksaw, Wrench
Supplies needed:
Star Teck ST250-478S Cable Fitting, Armored Cable
- Select the Appropriate Fitting
Select the appropriate Star Teck cable fitting (e.g., ST250-478S) that is compatible with both the enclosure and the specific armored cable being used. Refer to the product table in the instruction sheet for compatibility and specifications.
- Prepare the Cable
WARNING: Disconnect all power before beginning installation to prevent risk of shock. Determine the working length of the conductor required inside the enclosure or device. Carefully remove a portion of the cable's outer jacket to expose the armor. Use a hacksaw to cut the exposed armor, then trim the outer jacket to adjust the exposed armor strip length as indicated in the product table. CAUTION: Do not nick or cut the conductor insulation during this process.
- Insert Cable into Fitting
Feed the prepared armored cable through the gland nut opening of the fitting. Push the cable firmly until the cable armor makes contact with the internal end stop of the fitting.
- Tighten the Gland Nut
Tighten the gland nut until an appropriate seal is achieved around the cable's outer jacket. Alternatively, tighten to the maximum torque specified in the product table for your specific fitting. Ensure the bushing seals evenly around the cable's outer jacket and that the cable remains centered within the fitting to obtain an optimal and secure seal.
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.
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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.
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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.




