Eaton TP450SSB Square Outlet Box, 4-Inch Steel - NEC/CEC
Part Number: TP450SSB
Quick Summary
The Eaton TP450SSB Square Outlet Box is a durable enclosure for surface-mount electrical connections in industrial control panels. Engineers often struggle with reliable protection and quick, code-compliant wiring in compact spaces, and this box addresses those constraints with welded steel construction and a 30.3 cubic inch capacity. It is NEC/CEC compliant and rated for Ordinary/Non-Hazardous Locations, with additional UL Canada certification references available for Canadian projects. For ongoing builds, the TP450SSB delivers a 4-inch square footprint and NM clamps that streamline wiring while meeting common industry standards. Standardizing on this enclosure across multiple line cards helps reduce field rework, improve installation consistency, and lower total cost of ownership.
Product Information
Extended Description
TP450SSB Eaton: Eaton Crouse-Hinds series Square Outlet Box, (1) 1/2", 4", SSB, NM clamps, Welded, 2-1/8", Steel, (4) 1/2", (2) 1/2", (1) 3/4" E, 30.3 cubic inch capacity
Product Name
Eaton Crouse-Hinds series square outlet box
Catalog Number
TP450SSB
UPC
786189002027
Product Length/Depth
4 in
Product Height
2.13 in
Product Width
4 in
Product Weight
1.08 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
NM clamps
Bracket style
SSB
Construction
Welded
Side knockouts
(4) 1/2 in, (2) 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 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
Feature: Welded steel construction provides robust, vibration-resistant protection for critical wiring. Business impact: Increases enclosure longevity and reduces maintenance downtime, translating to higher equipment availability on the factory floor. Application: Ideal for industrial control panels where reliable enclosure integrity is essential and field exposure is frequent. Feature: NM clamps paired with four side knockouts and bottom knockout entries offer flexible wiring options. Business impact: SpeedsInstall and simplifies cable management, cutting installation time and labor costs. Application: Great for equipment racks and machine control installations needing diverse conduit and cable routing. Feature: Generous 30.3 cubic inch capacity supports standard splices, connectors, and terminations. Business impact: Enables compliant, organized wiring without overcrowding, reducing rework and risk of overheating. Application: Suitable for medium-density control enclosures in manufacturing lines. Feature: 4-inch box size with precise dimensions (2-1/8 inch depth, 4x 1/2 inch side knockouts, 2x 1/2 inch, 1x 3/4 inch E) plus bottom knockout. Business impact: Maximizes wiring layout flexibility while maintaining compact enclosure profiles. Application: Compatible with a wide range of Eaton Crouse-Hinds accessories and field wiring schemes. Feature: NEC/CEC compliance and Ordinary/Non-Hazardous Location rating ensure code-conforming installations. Business impact: Reduces compliance risk and accelerates project approval cycles. Application: Widely applicable to general industrial environments and cleanroom-adjacent processes where hazardous locations are not present.
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FAQs
TP450SSB uses NM clamps and provides four side knockouts (4x 1/2 in), two additional 1/2 in knockouts, one 3/4 in E knockout, and a bottom 1/2 in knockout. Plan wire routes to optimize clamp access and ensure conduit entries align with panel layouts. The welded steel construction helps maintain enclosure integrity during mounting and wiring in factory environments.
Key specs include a 4 inch box size, 2-1/8 inch depth, 30.3 cubic inches capacity, 1.08 lb weight, NM clamps, and welded steel construction. It supports ordinary/non-hazardous locations per NEC/CEC and is compatible with 4-inch square box accessories, making it easy to size for control panels.
Yes. The TP450SSB is designed to meet NEC/CEC standards and is rated for Ordinary/Non-Hazardous Locations. It is also referenced for Canadian certification in official documentation, which helps streamline cross-border projects and ensure code-compliant installations.
Best suited for surface-mount electrical connections in industrial control panels, machine housings, and process equipment enclosures. Its 4-inch square footprint, 30.3 cubic inch capacity, and NM clamp configuration support reliable wiring management, quick installation, and scalable control architectures.
The welded steel design minimizes maintenance and replacement costs, while code compliance reduces risk of compliance-related delays. Its standardization across multiple line cards lowers training and installation time, delivering lower total cost of ownership over the equipment’s lifecycle.