ABB - Installation Products STG8-G - PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 3 Inch/78 Metric, Overall Diameter 4.38 Inch/111.25 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 2.97 Inch/75.44 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Dark Gray
ABB - Installation Products

STG8-G

UPC: 704508409067


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Overview

The ABB STG8-G is a PVC-coated zinc grounded hub designed for secure and reliable conduit connections in industrial environments. Manufactured by ABB Installation Products, this hub features a robust zinc construction with a nominal 0.040" (40 mil) PVC coating bonded to the exterior, offering excellent corrosion resistance. The dark gray finish ensures a professional appearance. This grounded hub is specifically engineered for a 3-inch (78mm) pipe size, accommodating a maximum panel thickness of 0.25 inches (6.35mm). A key feature is the 105°C-rated thermoplastic insulated throat, which provides electrical insulation and has a UL94-V0 flammability rating, enhancing safety. The nitrile rubber (Buna-N) sealing ring, integrated into a unique sealing groove, provides a complete 360° seal that remains effective even if the conduit is not perfectly perpendicular to the enclosure. This captive sealing ring resists buckling or slipping during installation. The hub body and locknut feature hexagonal/splined designs with sharper, deeper teeth for an improved, penetrating bite, ensuring superior bonding to the enclosure and facilitating fast, easy installation with a wrench or hammer and screwdriver. The overall diameter is 4.38 inches (111.25mm), and the throat diameter is 2.97 inches (75.44mm). This product meets NEMA sealing requirements for NEMA 3R, 4 & 13 enclosures and is UL Listed and CSA Certified. For applications requiring enhanced corrosion resistance, chrome-plated versions (suffix -CP) are available and rated NEMA 4X. This grounded hub is ideal for applications demanding dependable grounding and environmental sealing, such as in manufacturing facilities, power distribution, and outdoor electrical installations.
  • Durable PVC coating bonded to zinc construction for corrosion resistance
  • Thermoplastic insulated throat (105°C rated, UL94-V0 flammability) for electrical safety
  • Nitrile rubber (Buna-N) sealing ring provides a 360° seal, even with non-perpendicular conduit
  • Hexagonal/splined body and locknut for easy installation and improved bonding
  • 3-inch (78mm) pipe size, 4.38-inch overall diameter, 0.25-inch maximum panel thickness

Specifications

Application
To positively bond conduit to box or enclosure
Color
Dark Gray
Color
Gray
Material
PVC Coated Zinc
Material
PVC Coated Zinc with Thermoplastic Insulated Throat and Nitrile Rubber (Buna-N) Sealing Ring
Series
STG
Size
3 Inch/78mm
Size
3 Inch / 78 Metric
Special Features
Hexagonal/Splined Body and Locknut Enables Fast and Easy Installation
Temperature Rating
105 C
Temperature Rating, Maximum
221 F
Temperature Rating, Maximum
105 C
Temperature Rating, Minimum
221 F
Temperature Rating, Minimum
105 C
Type
Grounded Hub Connector
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)
2.500 L
Package Weight (Metric)
1.134 kg
PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 1 Inch/27 Metric, Overall Diameter 2.00 Inch/50.80 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 1.00 Inch/25.40 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Dark Gray

STG3-G

PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 1 Inch/27 Metric, Overall Diameter 2.00 Inch/50.80 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 1.00 Inch/25.40 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Dark Gray
PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 3/4 Inch/21 Metric, Overall Diameter 1.44 Inch/36.58 Millimeters, Maximum Panel Thickness 0.19 Inch/4.83 Millimeters, Throat Diameter 0.78 Inch/19.81 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Dark Gray

STG2-G

PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 3/4 Inch/21 Metric, Overall Diameter 1.44 Inch/36.58 Millimeters, Maximum Panel Thickness 0.19 Inch/4.83 Millimeters, Throat Diameter 0.78 Inch/19.81 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Dark Gray
PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 4 Inch/103 Metric, Overall Diameter 5.50 Inch/139.70 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 3.88 Inch/98.55 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Dark Gray

STG10-G

PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 4 Inch/103 Metric, Overall Diameter 5.50 Inch/139.70 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 3.88 Inch/98.55 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Dark Gray
PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 1/2 Inch/16 Metric, Overall Diameter 1.44 Inch/36.58 Millimeters, Maximum Panel Thickness 0.19 Inch/4.83 Millimeters, Throat Diameter 0.59 Inch/14.99 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Dark Gray

STG1-G

PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 1/2 Inch/16 Metric, Overall Diameter 1.44 Inch/36.58 Millimeters, Maximum Panel Thickness 0.19 Inch/4.83 Millimeters, Throat Diameter 0.59 Inch/14.99 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Dark Gray
PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 2 Inch/53 Metric, Overall Diameter 3.25 Inch/82.55 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 1.97 Inch/50.04 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Light Gray (RAL7032)

STG6-LLG

PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 2 Inch/53 Metric, Overall Diameter 3.25 Inch/82.55 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 1.97 Inch/50.04 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Light Gray (RAL7032)
PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 1 Inch/27 Metric, Overall Diameter 2.00 Inch/50.80 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 1.00 Inch/25.40 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Light Gray (RAL7032)

STG3-LLG

PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 1 Inch/27 Metric, Overall Diameter 2.00 Inch/50.80 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 1.00 Inch/25.40 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Light Gray (RAL7032)
PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 3/4 Inch/21 Metric, Overall Diameter 1.44 Inch/36.58 Millimeters, Maximum Panel Thickness 0.19 Inch/4.83 Millimeters, Throat Diameter 0.78 Inch/19.81 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Light Gray

STG2-LG

PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 3/4 Inch/21 Metric, Overall Diameter 1.44 Inch/36.58 Millimeters, Maximum Panel Thickness 0.19 Inch/4.83 Millimeters, Throat Diameter 0.78 Inch/19.81 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Light Gray
PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 1 Inch/27 Metric, Overall Diameter 2.00 Inch/50.80 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 1.00 Inch/25.40 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Light Gray

STG3-LG

PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 1 Inch/27 Metric, Overall Diameter 2.00 Inch/50.80 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 1.00 Inch/25.40 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Light Gray
PVC Coated Zinc Hub Connector with Thermoplastic Insulated Throat, Pipe Size 1-1/2 Inch/41 Metric, Overall Diameter 2.75 Inch/69.85 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 1.53 Inch/38.86 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Dark Gray

HUB11/2-G

PVC Coated Zinc Hub Connector with Thermoplastic Insulated Throat, Pipe Size 1-1/2 Inch/41 Metric, Overall Diameter 2.75 Inch/69.85 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 1.53 Inch/38.86 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Dark Gray
PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 2 Inch/53 Metric, Overall Diameter 3.25 Inch/82.55 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 1.97 Inch/50.04 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Dark Gray

STG6-G

PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 2 Inch/53 Metric, Overall Diameter 3.25 Inch/82.55 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 1.97 Inch/50.04 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Dark Gray
PVC Coated Zinc Hub Connector with Thermoplastic Insulated Throat, Pipe Size 5 Inch/129 Metric, Overall Diameter 6.88 Inch/174.75 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 4.94 Inch/125.48 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Dark Gray

HUB5-G

PVC Coated Zinc Hub Connector with Thermoplastic Insulated Throat, Pipe Size 5 Inch/129 Metric, Overall Diameter 6.88 Inch/174.75 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 4.94 Inch/125.48 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Dark Gray
PVC Coated Zinc Hub Connector with Thermoplastic Insulated Throat, Pipe Size 1-1/2 Inch/41 Metric, Overall Diameter 2.75 Inch/69.85 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 1.53 Inch/38.86 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Light Gray (RAL7032)

STG3-WLG

PVC Coated Zinc Hub Connector with Thermoplastic Insulated Throat, Pipe Size 1-1/2 Inch/41 Metric, Overall Diameter 2.75 Inch/69.85 Millimeters, Maximum Panel Thickness 0.25 Inch/6.35 Millimeters, Throat Diameter 1.53 Inch/38.86 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Light Gray (RAL7032)

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.