Eaton TP451G Square Outlet Box 4-Inch Steel - NEC/CEC
Part Number: TP451G
Quick Summary
The Eaton TP451G Square Outlet Box provides rugged, 4-inch steel housing for conduit installations in industrial enclosures. When space is tight and multiple conduits must align, a misfit box can slow projects and hike labor costs. This TP451G meets NEC/CEC requirements and is rated for Ordinary/Non-Hazardous Locations, supporting safe, code-compliant installations. Its welded steel construction, side and bottom knockouts, and ground screw installed help reduce field rework while improving grounding reliability. In addition to standard steel square boxes, this model integrates seamlessly with Crouse-Hinds accessories for streamlined panel builds. This is essential for control panels that require reliable, code-compliant boxes without compromising interior space. Designers and installers benefit from predictable knockouts, solid grounding, and reliable performance in harsh environments.
Product Information
Extended Description
TP451G Eaton: Eaton Crouse-Hinds series outlet box, (2) 1/2", (2) 1/2", (1) 3/4" E, 4", VMS, Conduit (no clamps), Welded, 2-1/8", Steel, (6) 1/2", (3) 1/2", (1) 3/4" E, Ground screw installed, 30.3 cubic inch capacity
Product Name
Eaton Crouse-Hinds series square outlet box
Catalog Number
TP451G
UPC
662279065786
Product Length/Depth
4 in
Product Height
2.13 in
Product Width
4 in
Product Weight
1 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
Box size
4"
Capacity
30.3 cubic in
Depth
2-1/8"
Conduit/cable
Conduit (no clamps)
Bracket style
VMS
Construction
Welded
Side knockouts
(6) 1/2 in, (3) 1/2 in, (1) 3/4 in E
Bottom Knockouts
(2) 1/2 in, (2) 1/2 in, (1) 3/4 in E
Material
Steel
Special features
Ground screw installed
Crouse-Hinds series 4-Inch Steel Square Boxes and Covers catalog page
4-Inch Steel Square Outlet Boxes, Covers, Extension Rings Canadian certification
4-Inch Steel Square Outlet Boxes, Covers, Extension Rings Canadian certification
Steel Outlet Boxes for Electrical Systems
Steel Outlet Boxes for Electrical Systems
Built as a 4-inch square steel box, the TP451G delivers a generous 30.3 cubic inch capacity in a compact 2-1/8 inch depth. The welded steel body and ground screw installed ensure durability and reliable grounding in demanding environments. The VMS bracket style supports quick mounting to enclosures and panels, reducing onboarding time and improving punch-assembly accuracy for field crews. Conduit entries are engineered for rapid, reliable wiring. The TP451G features multiple knockouts: side with (6) 1/2 in, (3) 1/2 in, (1) 3/4 in E; bottom with (2) 1/2 in, (2) 1/2 in, (1) 3/4 in E. With conduit described as Conduit (no clamps), field wiring proceeds without internal clamps, saving installation steps and reducing miswired connections. Grounding is streamlined with a ground screw already installed, ensuring consistent bonding across field connections and reducing the risk of intermittent grounding issues. The welded construction adds rigidity, improves durability against vibration, and supports reliable service life in industrial environments. Design teams value the built-in compliance trail that supports audits and quality records. Its compatibility with Crouse-Hinds steel accessories and covers supports scalable, code-compliant panel builds. The 30.3 cubic inches capacity accommodates typical control wiring and devices without oversizing enclosures. This model is designed for long-term performance in rugged settings, and it enables quick, predictable installations in new builds. Maintenance and installation teams appreciate fewer parts to manage and streamlined procurement for project workflows.
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FAQs
TP451G is designed for ordinary location electrical installations using a 4-inch steel square box. It supports conduit entries through side and bottom knockouts, features welded construction, and includes a ground screw for reliable grounding. Its 30.3 cubic inches of capacity accommodates typical control wiring and field devices, making it ideal for industrial enclosures and junction needs.
This box provides multiple knockouts: side with six 1/2 in, three 1/2 in, one 3/4 in E; bottom with two 1/2 in, two 1/2 in, one 3/4 in E. Conduit (no clamps) simplifies routing, reduces hardware requirements, and minimizes internal clearance issues during panel assembly.
Yes, it's part of the Crouse-Hinds steel square box family and uses a VMS bracket style for quick mounting. It is compatible with standard 4-inch square covers, and welding ensures robust alignment with Eaton covers for weatherproof or dustproof configurations when needed.
The TP451G complies with NEC/CEC standards and is rated for Ordinary/Non-Hazardous Locations. This alignment helps reduce regulatory risk in typical industrial spaces and supports timely project approvals and inspections.
The TP451G reduces field labor with conduit entries through side and bottom knockouts, includes a ground screw, and offers a welded body for rugged durability. No interior clamps are required, and a 30.3 cubic inch capacity minimizes the need for multiple boxes, delivering measurable cost savings on small-control panel builds.