Eaton TP451PF Square Outlet Box - 4 in Steel NEC/CEC
Part Number: TP451PF
Quick Summary
The Eaton TP451PF square outlet box provides a rugged 4-inch steel housing for wiring connections in industrial control panels. In cramped enclosures, installers face knockouts that don’t align and grounding continuity that's hard to maintain. This device meets NEC/CEC standards and is suitable for Ordinary/Non-Hazardous Locations, with UL Canada certification reinforcing safe operation across North American facilities. By combining durable construction with flexible knockouts and a ground screw with pigtail, it helps reduce field rework. The result is faster panel assembly, improved reliability, and a scalable platform for future upgrades with compatible covers and accessories.
Product Information
Extended Description
TP451PF Eaton: Eaton Crouse-Hinds series Square 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, Includes ground screw with pigtail lead, 30.3 cubic inch capacity
Product Name
Eaton Crouse-Hinds series square outlet box
Catalog Number
TP451PF
UPC
786189000627
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
Includes ground screw with pigtail lead
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
Eaton Specification Sheet - TP451PF
Eaton Specification Sheet - TP451PF
Feature: 4 inch box size and 30.3 cubic inches of capacity. Benefit: More space for conductors and devices reduces crowding and minimizes termination errors in control panels, enabling quicker wire management and safer installations in demanding environments. Application: Ideal for 4 inch steel square boxes used in industrial automation panels. Feature: Welded steel construction. Benefit: Superior durability in dirty, wet, or vibration-prone settings lowers maintenance costs and extends service life. Application: Heavy equipment enclosures and process control cabinets. Feature: Conduit (no clamps). Benefit: Faster installation with fewer parts, reducing labor time and potential leakage points. Application: On-machine conduit runs in constrained spaces. Feature: (6) 1/2 in side knockouts, (3) 1/2 in, (1) 3/4 in E side and (2) 1/2 in bottom knockouts, (2) 1/2 in, (1) 3/4 in E bottom knockouts. Benefit: Flexible wiring routes and future expansion without custom fabrication. Application: Wiring distribution in compact control enclosures. Feature: VMS bracket style and welded construction. Benefit: Easier alignment and secure mounting, minimizing misfit issues during panel assembly. Application: Mounting in vertical or horizontal orientations with standard supports. Feature: Ground screw with pigtail lead. Benefit: Reliable grounding and faster fault clearing, improving safety compliance. Application: All circuits requiring robust earth grounding in non-hazardous locations. Feature: NEC/CEC standards and Ordinary/Non-Hazardous Location classification. Benefit: Reduced regulatory risk and smoother audits for commercial and industrial facilities. Application: North American installations requiring code compliance.
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FAQs
The TP451PF uses a 4 inch box with standard knockouts and conduit entries described as Conduit (no clamps). Plan layout around the six side knockouts and two bottom knockouts, select appropriate covers in the Crouse-Hinds line, and install grounding components via the included ground screw with pigtail. This setup simplifies cover mounting and ensures reliable enclosure integrity during field servicing.
Best for ordinary non-hazardous locations in industrial control panels, junction boxes, and equipment housings. Its 30.3 cubic inch capacity and welded steel construction support multiple conductors, while the VMS bracket aids precise mounting. The enclosure is compatible with standard 4-inch accessories, making panel upgrades straightforward and cost-effective.
TP451PF is designed to NEC/CEC compliant standards and is classified for Ordinary/Non-Hazardous Locations. Canadian certifications via UL ensure compliance for North American deployment, reducing regulatory risk and simplifying audits for facilities that require cross-border work and documented safety.
Yes. The TP451PF carries NEC/CEC standards and UL Canada certification, which supports use in Canadian facilities and other regions with equivalent code frameworks. Verify local amendments where applicable, but its certification set aligns with common industrial electrical practices in North America.
The welded steel construction resists corrosion and mechanical wear, reducing replacement costs. Grounding is streamlined by the integrated ground screw with pigtail, lowering fault investigation time. Its ample internal capacity, knockouts for flexible wiring, and compatibility with standard accessories minimize retrofit labor and shorten downtime during upgrades.