Eaton TP683 Masonry Box - Steel, Two-Gang, 31 cu in, NEC/CEC
Part Number: TP683
Quick Summary
The Eaton TP683 Masonry Box provides a durable steel enclosure for mounting outlets and devices in concrete walls. Many engineers struggle with retrofit projects in masonry while maintaining NEC/CEC compliance and accommodating multiple knockouts. This model meets NEC/CEC standards for ordinary/non-hazardous locations and offers a 31 cu in capacity within a compact two-gang footprint. Designed for fast installs, it pairs with standard steel masonry boxes, 2-1/2 inch depth, and compatible conduit fittings, helping reduce field time and errors. With steel construction and clearly defined knockouts, technicians gain predictable performance in commercial and industrial applications, supporting reliable terminations and long-term asset integrity.
Product Information
Extended Description
TP683 Eaton: Eaton Crouse-Hinds series Masonry Box, (4) 1/2", (4) 3/4", 2-1/2", (2) 1/2", (2) 3/4", Steel, Two-gang, (2) 1/2", (2) 3/4", 31.0 cubic inch capacity
Product Name
Eaton Crouse-Hinds series masonry box
Catalog Number
TP683
UPC
786189106831
Product Length/Depth
3.75 in
Product Height
3.75 in
Product Width
3.75 in
Product Weight
1.03 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
Depth
2-1/2"
Number of gangs
Two-gang
End Knockouts
(2) 1/2 in, (2) 3/4 in
Side knockouts
(2) 1/2 in, (2) 3/4 in
Bottom Knockouts
(4) 1/2 in, (4) 3/4 in
Capacity
31 cubic in
Material
Steel
Crouse-Hinds series Steel Masonry Boxes catalog page
Steel Masonry Boxes Canadian certification
Steel Masonry Boxes Canadian certification
Eaton Specification Sheet - TP683
Eaton Specification Sheet - TP683
Feature: Steel construction provides rugged mechanical protection for field devices. Business Impact: improves resistance to impact, vibration, and wear, extending service life in busy electrical rooms and construction sites. Application: ideal for wall-mounted outlets and control devices in concrete or masonry walls where reliability is critical. Feature: Two-gang footprint with a 3.75 inch width and 2-1/2 inch depth. Business Impact: maximizes usable interior space while maintaining a compact wall installation, aiding conductors’ organization and code-compliant fills. Application: supports outlets, relays, and small control devices in commercial and light industrial projects. Feature: 31 cubic inch capacity and defined knockouts. Business Impact: provides ample room for conductors, devices, and connectors, reducing the need for junction boxes and simplifying wire management. Application: ideal for complex terminations in masonry walls without compromising accessibility. Feature: Knockouts configuration (End: 2x 1/2 in, 2x 3/4 in; Side: 2x 1/2 in, 2x 3/4 in; Bottom: 4x 1/2 in, 4x 3/4 in). Business Impact: flexible routing options support varied conduit systems and faster installation, lowering field modification costs. Application: adaptable to diverse project specifications and conduit sizing. Feature: Compliance and classification (NEC/CEC; Ordinary/Non-Hazardous Locations). Business Impact: reduces regulatory risk and streamlines approvals for commercial and industrial installations. Application: suitable for infrastructure and equipment enclosures where standard electrical codes apply. Feature: Documentation and compatibility with Eaton product ecosystem (spec sheets, catalogs). Business Impact: accelerates procurement, reduces mis-sizing, and improves maintenance planning. Application: aligns with project specs, enabling smoother commissioning and lifecycle support.
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FAQs
TP683 offers end knockouts of (2) 1/2 in and (2) 3/4 in, side knockouts of the same sizes, and bottom knockouts of (4) 1/2 in and (4) 3/4 in. This arrangement supports flexible conduit routing for various wiring schemes, reduces field modification work, and simplifies termination within a single, standardized enclosure for masonry walls.
TP683 is a two-gang steel box with approximately a 3.75 in width, height, and depth, yielding 31 cubic inches of interior space. The 3.75 in overall footprint and 31 cu in capacity provide ample room for conductors and devices while meeting typical NEC/CEC fill requirements, enabling safer terminations and easier future upgrades without relocating hardware.
Yes. TP683 is certified for Ordinary/Non-Hazardous Locations under NEC/CEC, making it appropriate for standard commercial and light-industrial installations in concrete or masonry walls. It is not rated for hazardous or outdoor weatherized conditions, so use in such environments would require additional protection or alternative enclosures.
TP683 complies with NEC/CEC standards and is classified for Ordinary/Non-Hazardous Locations, demonstrating suitability for non-hazardous industrial and commercial settings. Canadian certification references are available in related UL listings, which can assist cross-border projects and formal compliance reviews during design and procurement.
TP683 standardizes a two-gang masonry solution with defined knockouts and 31 cu in capacity, reducing field modifications and enabling faster installs. Access to Eaton catalogs and specification sheets accelerates sourcing and reduces risk of mis-sizing, delivering lower lifecycle costs and improved maintenance planning for project ROI.