ABB - Installation Products HUB400-SC - Conduit Hub, 4 Inch, Zinc Body, Flame Retardant Insulated Throat, Nitrile Rubber Sealing Ring, For Rigid/IMC Applications, UL E23018, Conforms to UL514B
ABB - Installation Products

HUB400-SC

UPC: 785991119404


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Overview

The ABB Installation Products HUB400-SC is a 4-inch zinc conduit hub designed for terminating Rigid Metal Conduit (RMC) and Intermediate Metal Conduit (IMC) into enclosures or boxes with superior watertight performance. Engineered with a flame-retardant insulated throat rated to 105°C and a UL94-V0 flammability rating, this hub ensures compliance with stringent safety standards while providing reliable protection against moisture and contaminants. The nitrile rubber (BUNA-N) sealing ring is captive in a precision-machined groove, resisting buckling or slipping during installation and delivering a complete 360° seal—even when the conduit is not perpendicular to the enclosure. The hexagonal/splined body and locknut design, with peripheral slots spaced every 30°, enable fast and easy installation using standard tools like wrenches or screwdrivers. The locknut features sharper, deeper teeth for improved bonding to the enclosure, while the tapered internal threads create a watertight union. Certified to UL E23018 and conforming to UL514B, the HUB400-SC meets NEMA sealing requirements for NEMA 3R, 4, and 13 enclosures. Suitable for outdoor and indoor applications exposed to continuous or intermittent moisture, this hub is ideal for industrial, commercial, and hazardous location installations. The zinc body is standard, with optional finishes including copper-free aluminum, chrome plating (NEMA 4X rated), or 316 stainless steel for corrosion resistance. With a nominal panel thickness of 0.25 inches and a throat diameter of 4 inches, the HUB400-SC is a robust solution for demanding electrical installations.
  • The Steel City Commercial die-cast zinc hub with insulated throat and sealing ring is the perfect choice to terminate conduits in an enclosure or box, providing superior sealing for exceptional watertight performance
  • Flame-retardant insulated throat rated to 105°C with UL94-V0 flammability rating
  • Nitrile rubber (BUNA-N) sealing ring provides 360° watertight seal, even at non-perpendicular angles
  • Hexagonal/splined body and locknut design enables fast installation with standard tools
  • UL E23018 and UL514B certified; meets NEMA 3R, 4, and 13 enclosure requirements

Specifications

Application
Rigid/IMC
Finish
Natural
Material
Zinc
Mounting Type
Hexagonal/Splined with Locknut
Nema Rating
NEMA 3R, 4, 13
Series
HUB400-SC
Size
4 in
Size
4 Inch
Standard
UL E23018, Conforms to US514B
Type
Conduit Hub
Package Dimensions (L x W x H)
6.1 IN x 6.3 IN x 3.15 IN
Package Dimensions (L x W x H)
15.494 cm x 16.002 cm x 8.001 cm
Package Weight (Imperial)
0.110 L
Package Weight (Metric)
0.050 kg
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HUB100GR-SC

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Locknut, Grounding, Zinc Die Cast, Size 4 Inch, 3/0-6 Lug

170-G

Locknut, Grounding, Zinc Die Cast, Size 4 Inch, 3/0-6 Lug
Pipe roller for 9 to 10 inch pipe. The sheet identifies it as catalog number PR9010EG. No material, finish, or dimensional attributes are printed on the sheet.

PR9010EG

Pipe roller for 9 to 10 inch pipe. The sheet identifies it as catalog number PR9010EG. No material, finish, or dimensional attributes are printed on the sheet.
Conduit Hub, 2 Inch, Zinc Body, Flame Retardant Insulated Throat, Nitrile Rubber Sealing Ring, For Rigid/IMC Applications, UL E23018, Conforms to UL514B

HUB200-SC

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Conduit Hub, 2-1/2 Inch, Zinc Body, Flame Retardant Insulated Throat, Nitrile Rubber Sealing Ring, For Rigid/IMC Applications, UL E23018, Conforms to UL514B

HUB250-SC

Conduit Hub, 2-1/2 Inch, Zinc Body, Flame Retardant Insulated Throat, Nitrile Rubber Sealing Ring, For Rigid/IMC Applications, UL E23018, Conforms to UL514B
Conduit Hub, 3-1/2 Inch, Zinc Body, Flame Retardant Insulated Throat, Nitrile Rubber Sealing Ring, For Rigid/IMC Applications, UL E23018, Conforms to UL514B

HUB350-SC

Conduit Hub, 3-1/2 Inch, Zinc Body, Flame Retardant Insulated Throat, Nitrile Rubber Sealing Ring, For Rigid/IMC Applications, UL E23018, Conforms to UL514B
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HUB150GR-SC

Conduit Hub with Ground Ring, 1-1/2 Inch, Zinc Body, Flame Retardant Insulated Throat, Nitrile Rubber Sealing Ring, For Rigid/IMC Applications, UL E3060, Conforms to UL514B
Conduit Hub, 1 Inch, Zinc Body, Flame Retardant Insulated Throat, Nitrile Rubber Sealing Ring, For Rigid/IMC Applications, UL E23018, Conforms to UL514B

HUB100-SC

Conduit Hub, 1 Inch, Zinc Body, Flame Retardant Insulated Throat, Nitrile Rubber Sealing Ring, For Rigid/IMC Applications, UL E23018, Conforms to UL514B

Frequently Asked Questions

Is the HUB400-SC suitable for wet locations?

Yes, the HUB400-SC is suitable for wet locations as per its certifications.

What is the trade size of the HUB400-SC?

The HUB400-SC has a trade size of 4 inches.

What certifications does the HUB400-SC have?

The HUB400-SC is certified under UL/cUL File No. E23018 and conforms to UL514B.

What is the weight of the HUB400-SC?

The HUB400-SC weighs 2.518 lbs.

What is the finish of the HUB400-SC?

The HUB400-SC has a natural finish.

What materials are used in the HUB400-SC?

The HUB400-SC is made from Zamak #3 Type Zinc for the body and locknut, flame retardant PP compound resin for the insulated throat, and nitrile rubber for the sealing ring.

What is the purpose of the sealing ring in HUB400-SC?

The sealing ring provides exceptional watertight performance and environmental protection.

What is the maximum ground conductor size for HUB400-SC?

The maximum ground conductor size for the HUB400-SC is 1/0 AWG.

Can the HUB400-SC be used for grounding?

The HUB400-SC is a standard hub and does not include grounding features.

What are the installation requirements for HUB400-SC?

The HUB400-SC must be installed in accordance with applicable national and local electrical codes.

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