Eaton TP628 Octagon Box - 35 cu in Capacity
Part Number: TP628
Quick Summary
The Eaton TP628 Octagon Box is a steel, 4-inch octagonal concrete enclosure designed for reliable electrical connections in non-hazardous industrial spaces. For engineers and procurement teams, scale, durability, and code compliance often complicate enclosure selection and installation timelines. This enclosure meets NEC/CEC standards and UL Canada certification, offering a robust solution for ordinary locations. Its 35 cubic inch capacity, 1/2 in and 3/4 in knockouts, and lightweight steel construction translate to faster install times with fewer field modifications. With NEC/CEC compliance and conventional ordinary-location classification, it fits standard industrial enclosures programs while supporting future wiring or expansion. Rugged steel construction supports long service life in concrete installations.
Product Information
Extended Description
TP628 Eaton: Eaton Crouse-Hinds series Octagon Concrete Box, 4", 3", Steel, 1/2" and 3/4" single row, 35.0 cubic inch capacity
Product Name
Eaton Crouse-Hinds series octagon concrete box
Catalog Number
TP628
UPC
786189106282
Product Length/Depth
4 in
Product Height
3 in
Product Width
4 in
Product Weight
0.85 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
Material
Steel
Box size
4"
Depth
3"
Side knockouts
1/2 in and 3/4 in single row
Capacity
35 cubic in
Crouse-Hinds series 4-Inch Steel Octagon Concrete Boxes catalog page
4-Inch Steel Octagon Concrete Boxes Canadian certification
4-Inch Steel Octagon Concrete Boxes Canadian certification
Steel Outlet Boxes for Electrical Systems
Steel Outlet Boxes for Electrical Systems
Feature: Steel construction provides rugged durability for terminations and splices in concrete installations. This translates to improved mechanical protection against impact, vibration, and moisture ingress, reducing rework after commissioning. Application: Ideal for embedded or surface-mounted enclosures in non-hazardous areas where reliable performance is essential. Business Impact: Longer service life and lower maintenance costs contribute to lower total cost of ownership in plant environments. Feature: 4-inch box size with 3-inch depth and 35 cubic inches of capacity. This capacity enables multiple conductors and connectors, supporting neater internal layouts and reducing the need for later box swaps. Application: Suitable for junctions in concrete walls and controlled environments with NEC/CEC requirements. Business Impact: Streamlined wiring, faster turnarounds, and easier future modifications. Feature: Side knockouts of 1/2 inch and 3/4 inch in a single row. This provides flexible conduit routing and simplifies field wiring. Application: Quick connections for standard conduit systems in industrial plants. Business Impact: Minimizes install time and downstream rework by accommodating common sizes without additional fittings. Feature: Weight approximately 0.85 lb. This manageable weight aids handling in restricted spaces and reduces labor costs during installation. Application: Preferred for overhead or tight-space deployments. Business Impact: Safer handling, less fatigue, and faster productivity. Feature: NEC/CEC standards compliance and Ordinary/Non-Hazardous Location rating. Application: Suitable for general industrial environments requiring reliable, code-compliant enclosures. Business Impact: Lower risk of compliance failures and inspection delays, improving project predictability. Feature: Cataloged as part of the Eaton Crouse-Hinds steel family. Application: Consistent procurement and compatibility with other Crouse-Hinds steel boxes. Business Impact: Streamlined stocking, easier maintenance, and uniform installation practices across sites.
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FAQs
Install by embedding the 4 in box in concrete or mounting within a cast-in wall where permitted. Use the 1/2 in and 3/4 in knockouts to route conduit, ensuring the box remains level and accessible for splices. Follow NEC/CEC guidelines and secure the surrounding concrete to maintain enclosure integrity.
The TP628 is a 4 in x 4 in footprint, 3 in deep steel box with a 35 cubic inch capacity. It features side knockouts in 1/2 in and 3/4 in single rows, enabling standard conduit connections while maintaining enclosure strength and compliance with NEC/CEC standards.
Yes. The TP628 is rated for Ordinary/Non-Hazardous Locations and complies with NEC/CEC standards. It also carries UL Canada certification, ensuring regulatory alignment for installations in Canadian facilities and other non-hazardous industrial environments.
Steel construction provides superior mechanical protection and durability under vibration and impact common in industrial settings. The 35 cu in capacity avoids overcrowding, while 1/2 in and 3/4 in knockouts streamline conduit routing, reducing field modifications and improving reliability in concrete installations.
Official datasheets and certifications are available through Eaton’s catalog pages and UL Canada listings. Access the Crouse-Hinds steel outlet boxes catalog page, and the Steel Outlet Boxes for Electrical Systems datasheet for installation guidance and compliance details.