Eaton TP403G Square Outlet Box - 30.3 cu in capacity
Part Number: TP403G
Quick Summary
The Eaton Crouse-Hinds TP403G square outlet box provides a rugged 4-inch steel enclosure for conduit terminations in industrial control panels. Engineers often struggle with space, grounding, and compliance when mounting outlets in compact enclosures. It carries NEC/CEC compliance and UL listing for Ordinary/Non-Hazardous Locations, with a ground screw already installed for immediate grounding. With welded construction and a 30.3 cubic inch capacity, it accommodates wiring while keeping a tidy, field-ready profile. Designed for quick integration into existing steel boxes and control cabinets, it supports reliable, code-compliant installations without unnecessary hardware.
Product Information
Extended Description
TP403G Eaton: Eaton Crouse-Hinds series Square Outlet Box, (2) 1/2", (2) 1/2", (1) 3/4" E, 4", Conduit (no clamps), Welded, 2-1/8", Steel, (8) 1/2",(4) 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
TP403G
UPC
786189804034
Product Length/Depth
4 in
Product Height
2.13 in
Product Width
4 in
Product Weight
0.91 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)
Construction
Welded
Side knockouts
(8) 1/2 in, (4) 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 UL certification
4-Inch Steel Square Outlet Boxes, Covers, Extension Rings UL certification
Eaton Specification Sheet - TP403G
Eaton Specification Sheet - TP403G
Welded steel construction provides rugged durability for conduit terminations in demanding environments. This architecture resists deformation from vibration and impact, helping maintain enclosure integrity and wiring protection over the life of the installation. Use it in control panels, machine enclosures, and process cabinets where reliability is essential. Ground screw installed simplifies electrical grounding, reducing setup time and potential grounding issues while improving safety in dense wiring layouts. The quick-ground feature supports compliance with grounding practices across industrial facilities. Side knockouts (eight 1/2 in, four 1/2 in, one 3/4 in E) and bottom knockouts (two 1/2 in, two 1/2 in, one 3/4 in E) provide flexible conduit routing, enabling faster wiring and fewer field adaptations. This versatility is ideal for multi-conduit panels in automation racks and compact control cabinets. Conduit entries are specified as Conduit (no clamps), reducing install hardware and inventory needs, which translates to lower total installed cost. The 30.3 cubic inch capacity accommodates splices and terminations without crowding, supporting cleaner wiring schematics and easier future upgrades. NEC/CEC compliance and UL listing for Ordinary/Non-Hazardous Locations offer regulatory reassurance, simplifying procurement and installation in standard industrial environments. Steel construction with a modest weight of 0.91 lb makes mounting straightforward and transportable for shop-to-site projects.
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FAQs
TP403G provides side knockouts (eight 1/2 in, four 1/2 in, and one 3/4 in E) and bottom knockouts (two 1/2 in, two 1/2 in, one 3/4 in E) and is designed for Conduit (no clamps). This gives flexible routing and reduces field modifications, enabling cleaner, faster wiring in control panels and machine enclosures.
Yes. The TP403G is designed to NEC/CEC standards and is intended for Ordinary/Non-Hazardous Locations. UL certification for Canada and the US is available through official UL reports, supporting compliant installations and simplified procurement for standard industrial environments.
The box is 4 inches by 4 inches with a depth of 2-1/8 inches and a capacity of 30.3 cubic inches. It weighs approximately 0.91 lb and features welded steel construction with a ground screw installed for immediate grounding, suitable for medium-density wiring in control panels.
Best for industrial control panels, motor control centers, and machine enclosures where a compact, durable steel box is needed. Its 30.3 cu in capacity, multiple knockouts, and no-clamp conduit entries support reliable terminations in non-hazardous environments, reducing field modifications and downtime.
You can access the Eaton TP403G specification sheet from Eaton’s site, including the main spec page and PDF datasheet. UL certification pages for Canada and the US are available via UL’s database. These resources provide complete installation guidelines and compliance details for procurement and validation.