Eaton TP684 Masonry Box - NEC/CEC
Part Number: TP684
Quick Summary
TP684 Masonry Box by Eaton provides a rugged steel enclosure for electrical terminations in concrete walls. Contractors often wrestle with finding boxes that install cleanly in masonry, meet code, and accommodate multiple devices. It carries NEC/CEC compliance for standard industrial use and supports Ordinary/Non-Hazardous Locations with UL Canada certification listings. Designed for reliable steel masonry installations, it enables faster installations, broader knock-out options, and seamless integration with Eaton's Crouse-Hinds line—reducing field calls and maintenance.
Product Information
Extended Description
TP684 Eaton: Eaton Crouse-Hinds series Masonry Box, (6) 1/2", (6) 3/4", 2-1/2", (3) 1/2", (3) 3/4", Steel, Three-gang, (2) 1/2", (2) 3/4", 46.5 cubic inch capacity
Product Name
Eaton Crouse-Hinds series masonry box
Catalog Number
TP684
UPC
786189106848
Product Length/Depth
5.56 in
Product Height
3.75 in
Product Width
3.75 in
Product Weight
1.29 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
Depth
2-1/2"
Number of gangs
Three-gang
End Knockouts
(3) 1/2 in, (3) 3/4 in
Side knockouts
(2) 1/2 in, (2) 3/4 in
Bottom Knockouts
(6) 1/2 in, (6) 3/4 in
Capacity
46.5 cubic in
Material
Steel
Crouse-Hinds series Steel Masonry Boxes catalog page
Steel Masonry Boxes Canadian certification
Steel Masonry Boxes Canadian certification
Steel Outlet Boxes for Electrical Systems
Steel Outlet Boxes for Electrical Systems
Steel three-gang masonry enclosure with 46.5 cubic inches of capacity supports multiple devices in a single wall box, reducing the need for multiple enclosures and saving installation time. This translates to fewer drilling steps, simpler wiring schemes, and lower labor costs on busy job sites. Ideal for concrete masonry walls in industrial facilities, it ensures reliable device terminations while maintaining a compact footprint.Knockouts patterned for End, Side, and Bottom positions provide flexible wiring options for 1/2 in and 3/4 in conduits, enabling clean routing and secure terminations. This feature minimizes field improvisation and supports standardized conduit practices, enhancing installation consistency across projects and reducing the risk of mis-sized openings.Dimensions and mass are optimized for tight spaces: 5.56 in length, 3.75 in width and height, with a weight of 1.29 lb, offering manageable handling during mounting and device mounting operations. The compact size helps crews work efficiently in crowded electrical rooms or retrofit scenarios without sacrificing capacity.Compliance and certification are built in: NEC/CEC standards with Ordinary/Non-Hazardous Location suitability plus UL Canada listings, giving procurement teams confidence in code adherence and cross-border applicability. This reduces compliance risk and accelerates approvals for projects in multi-jurisdiction environments.Specification access and compatibility are streamlined with available catalogs and datasheets, including the Crouse-Hinds steel masonry boxes catalog page and product guides. This enables faster spec-to-order workflows, ensures proper part matching, and minimizes errors during procurement and installation.Material durability is assured with steel construction, delivering robust protection for terminations in demanding environments. The enclosure’s resilience supports longer service life and lower maintenance costs, especially in high-traffic electrical rooms or retrofit projects where integrity of joint and wiring is critical.
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FAQs
The TP684 installs into concrete masonry walls as a three-gang steel enclosure with pre-defined knockouts for flexible wiring. It includes end knockouts of 1/2 in and 3/4 in, side knockouts of 1/2 in and 3/4 in, and bottom knockouts in both sizes. The unit provides 46.5 cubic inches of capacity and measures 5.56 in by 3.75 in by 3.75 in, with a weight of 1.29 lb for easier handling during mounting and device installations.
TP684 meets NEC/CEC standards for electrical installations and is suitable for Ordinary/Non-Hazardous Locations. It also carries UL Canada certification listings, supporting cross-border use and compliance in Canadian projects. These certifications help reduce approval cycles and ensure code-aligned installations in both U.S. and Canadian facilities.
Yes. TP684 is part of Eaton's Crouse-Hinds steel masonry box family, designed to integrate with compatible durable enclosures and mounting patterns. This compatibility simplifies stocking and procurement, enables consistent installation practices, and helps maintain common spare parts across projects that use Crouse-Hinds steel masonry boxes.
TP684 provides three-gang space with a 46.5 cubic inch capacity, enabling multiple devices or splices in a single masonry box. Its versatile knockout arrangement supports various conduit sizes, reducing the need for ad hoc spacers or adapters. This leads to faster wiring, fewer enclosure layers, and more straightforward field troubleshooting in busy industrial environments.
The steel construction offers durability against impact and environmental exposure, leading to longer service life and lower maintenance costs compared with weaker materials. A single rugged enclosure reduces the likelihood of device movement or damage during servicing, translating into lower replacement rates, reduced downtime, and a favorable total-cost-of-ownership (TCO) over the equipment’s life cycle.