Eaton TP425 Square Outlet Box - NEC/CEC Steel 4in
Part Number: TP425
Quick Summary
The Eaton TP425 Square Outlet Box provides a rugged enclosure solution for 22 cubic inches of internal capacity in industrial electrical infrastructure and control panels. This addresses the common challenge of fitting splices and devices into a compact, reliable housing in harsh environments. With NEC/CEC standards and ordinary/non-hazardous location suitability, this box helps maintain compliance while reducing risk. The welded steel construction, VP bracket style, and standard conduit entries offer predictable performance and durability, enabling faster installation and reuse across multiple projects. By prioritizing a steel, code-compliant enclosure, engineers achieve long-term cost efficiency and streamlined procurement in automation deployments.
Product Information
Extended Description
TP425 Eaton: Eaton Crouse-Hinds series Square Outlet Box, (2) 1/2", (2) 1/2", (1) 3/4" E, 4", VP, Conduit (no clamps), Welded, 1-1/2", Steel, (6) 1/2", (3) 1/2", (1) 3/4" E, 22.0 cubic inch capacity
Product Name
Eaton Crouse-Hinds series square outlet box
Catalog Number
TP425
UPC
786189104257
Product Length/Depth
4 in
Product Height
1.5 in
Product Width
4 in
Product Weight
0.82 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
Box size
4"
Capacity
22 cubic in
Depth
1-1/2"
Conduit/cable
Conduit (no clamps)
Bracket style
VP
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
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
Steel Outlet Boxes for Electrical Systems
Steel Outlet Boxes for Electrical Systems
Feature → Business Impact → Application: The TP425 uses welded steel construction, delivering durable protection for sensitive splices and devices, which reduces field failure risk and lowers maintenance costs in busy production lines. This translates to fewer downtime events and more reliable automation in manufacturing cells where space is constrained. Application: control panels and junction boxes in automation environments. Feature → Business Impact → Application: With a 22 cubic inch capacity in a 4-inch box, the TP425 provides ample room for wiring, connectors, and small devices, enabling compliant terminations without crowding, which improves installation quality and reduces rework. Application: motor control centers, PLC panels, and instrumentation enclosures. Feature → Business Impact → Application: Conduit entries are configured for versatility, including multiple side and bottom knockouts (6× 1/2 in side, 3× 1/2 in side, 1× 3/4 in E; bottom: 2× 1/2 in, 2× 1/2 in, 1× 3/4 in E), supporting flexible routing and faster wiring. Application: field installations with varied conduit layouts. Feature → Business Impact → Application: Conduit is specified as “Conduit (no clamps)” which reduces parts count and procurement time, lowering total installed cost and simplifying stocking for maintenance crews. Application: retrofits and new builds where clamp-compatible accessories are planned separately. Feature → Business Impact → Application: VP bracket style and welded construction enable robust mounting options and long-term stability in vertical or horizontal orientations, improving reliability in space-constrained installations. Application: weatherproof and vibration-prone industrial spaces. Feature → Business Impact → Application: Ordinary/Non-Hazardous Location classification provides clear compliance guidance, reducing design uncertainties and accelerating approvals for standard industrial environments. Application: general machine cabinets and panel ports in automation facilities.
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FAQs
TP425 provides side knockouts totaling six 1/2 in, three 1/2 in, and one 3/4 in E, plus bottom knockouts of two 1/2 in, two 1/2 in, and one 3/4 in E, enabling flexible conduit routing without clamps.
The box offers 22 cubic inches of internal volume with a 4 in box size, 1-1/2 in depth, and 4 in width/length, supporting multiple conductors and small devices while maintaining a compact footprint.
TP425 is rated for Ordinary/Non-Hazardous Locations, aligning with NEC/CEC standards for standard industrial environments and not intended for hazardous areas.
TP425 adheres to NEC/CEC standards and is documented with UL certification references in Eaton’s catalog and datasheets, supporting compliance and qualification for typical industrial installations.
The welded steel construction, 22 cu in capacity, and conduit-friendly knockouts reduce parts and time, while the VP bracket style provides stable mounting, contributing to lower installation costs and faster project delivery.