Eaton TP446 Square Outlet Box - NEC/CEC, 22 cu in Capacity
Part Number: TP446
Quick Summary
The Eaton TP446 is a 4-inch square outlet box designed to enclose NM cables in control panels and industrial enclosures. When wiring space is tight or knockouts must meet NEC/CEC requirements, a rugged, properly sized enclosure prevents delays and noncompliance. UL-certified for 4-Inch Steel Square Outlet Boxes and Ordinary/Non-Hazardous Locations, it aligns with safety audits and builds long-term reliability. Its welded steel construction, NM clamps, and 22 cubic inch capacity support neat, code-compliant terminations in compact spaces. For manufacturers and integrators, this enclosure delivers predictable installation outcomes and reduces the risk of redesigns during panel assembly.
Product Information
Extended Description
TP446 Eaton: Eaton Crouse-Hinds series Square Outlet Box, (1) 1/2", 4", NM clamps, Welded, 1-1/2", Steel, (2) 1/2", (1) 1/2", (1) 3/4" E, 22.0 cubic inch capacity
Product Name
Eaton Crouse-Hinds series square outlet box
Catalog Number
TP446
UPC
786189104462
Product Length/Depth
4 in
Product Height
1.5 in
Product Width
4 in
Product Weight
0.88 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
Box size
4"
Capacity
22 cubic in
Depth
1-1/2"
Conduit/cable
NM clamps
Construction
Welded
Side knockouts
(2) 1/2 in, (1) 1/2 in, (1) 3/4 in E
Bottom Knockouts
(1) 1/2 in
Material
Steel
Crouse-Hinds series 4-Inch Steel Square Boxes and Covers catalog page
4-Inch Steel Square Outlet Boxes, Covers, Extension Rings UL certification
4-Inch Steel Square Outlet Boxes, Covers, Extension Rings UL certification
Eaton Specification Sheet - TP446
Eaton Specification Sheet - TP446
The TP446 uses a 4-inch steel square box with welded construction to provide robust protection and long-term durability in industrial environments, supporting reliable terminations and reduced field repairs. This translates to measurable business outcomes such as fewer panel reworks and improved compliance with NEC/CEC standards. The NM clamps and generous interior volume enable clean, compliant wiring of conductors while minimizing space conflicts inside the enclosure. The knockout configuration—side knockouts at 1/2 inch and 3/4 inch E plus a bottom 1/2 inch—offers flexible routing for NM cables and conduits, accelerating installation and reducing labor time. The 1-1/2 inch depth and 4 inch box size strike a balance between mechanical protection and panel density, improving overall enclosure utilization. UL certification and Ordinary/Non-Hazardous Location classification further reduce audit risk and support scalable plant deployment. Compatibility with Eaton’s Crouse-Hinds steel square boxes and covers ensures straightforward replacement and maintenance, lowering total cost of ownership over the device lifecycle.
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FAQs
The TP446 features side knockouts: two 1/2 inch knockouts, one additional 1/2 inch, and one 3/4 inch E knockout, plus a bottom 1/2 inch knockout. It is a 4 inch box with a depth of 1-1/2 inches and a capacity of 22 cubic inches, constructed from welded steel and designed for NM clamps.
TP446 is designed for Ordinary/Non-Hazardous Locations and carries NEC/CEC standards alignment. It is UL certified for 4-Inch Steel Square Boxes, Covers, and Extension Rings, ensuring it meets typical field and installation audits for safe electrical enclosures in commercial and industrial panels.
The enclosure uses NM clamps and a spacious 22 cu in interior, enabling neat, compliant wiring with minimal trenching or alterations. Its 4 x 4 inch footprint and 1-1/2 inch depth fit many panel layouts, while welded steel construction provides durability and straightforward mounting in tight spaces.
Yes. TP446 is UL certified for 4-Inch Steel Square Outlet Boxes, Covers, Extension Rings, and is intended for Ordinary/Non-Hazardous Locations, making it suitable for typical control panel and machine enclosures across the US and Canada under NEC/CEC frameworks.
Plan for a 4-inch square footprint with a 4 inch width, 4 inch length, and 1.5 inch height. The enclosure weighs approximately 0.88 lb, with a usable 22 cu in interior capacity to accommodate conductors and connections within standard panel budgets.