Eaton TP404PFRED Square Outlet Box - 4-Inch Welded Steel NEC
Part Number: TP404PFRED
Quick Summary
The Eaton TP404PFRED Square Outlet Box is a rugged 4-inch steel enclosure designed for conduit terminations in control cabinets and industrial panels. When space is tight and wiring demands are high, installers struggle with misfit knockouts and grounding gaps. This model meets NEC/CEC requirements for ordinary/non-hazardous locations and features welded steel construction with a ground screw and pigtail lead for reliable grounding. Paired with the 22.0 cubic inch capacity and ready knockout layout, it supports fast installs and scalable conduit runs, delivering long-term reliability and consistent electrical safety in rugged industrial environments.
Product Information
Extended Description
TP404PFRED Eaton: Eaton Crouse-Hinds series square outlet box, (2) 1/2", (2) 3/4" bottom, Solid, 4" box, Red, Welded, 1-1/2" depth, (4) 1/2", (2) 1/2"+3/4" EKO end, Steel, (4) 1/2", (2) 1/2"+3/4" EKO side, Ground screw w/ pigtail lead, 22.0 cu in capacity
Product Name
Eaton Crouse-Hinds series square outlet box
Catalog Number
TP404PFRED
UPC
662279176277
Product Length/Depth
2.25 in
Product Height
4 in
Product Width
4 in
Product Weight
0.72 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
Box size
4"
Capacity
22.0 cubic inch capacity
Depth
1-1/2"
Conduit/cable
Conduit (no clamps)
Construction
Welded
Box ground wire
Solid
Side knockouts
(4) 1/2", (2) 1/2" + 3/4" EKO
Bottom Knockouts
(2) 1/2", (2) 3/4"
End Knockouts
(4) 1/2", (2) 1/2" + 3/4" EKO
Color
Red
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 UL certification
4-Inch Steel Square Outlet Boxes, Covers, Extension Rings UL certification
Steel Outlet Boxes for Electrical Systems
Feature: 4-inch square steel box with welded construction. Business Impact: Provides durable, vibration-resistant enclosures that reduce field replacement costs and downtime. Application: Suitable for control panels and machine housings where space is constrained and reliability matters. Feature: 22.0 cubic inch capacity. Business Impact: Higher wiring capacity improves packing density, simplifies conduit planning, and minimizes rework. Application: Ideal for medium-dense wiring in panel boards and distribution boxes. Feature: Ground screw with pigtail lead. Business Impact: Ensures a robust grounding path that supports code compliance and protects personnel. Application: Critical in equipment grounding for motors and sensors in harsh environments. Feature: Knockout configuration (side, bottom, end). Business Impact: Flexible conduit routing reduces install time and commission risk. Application: Enables versatile harness layouts for industrial automation panels and equipment enclosures. Feature: Conduit (no clamps). Business Impact: Installer retains choice of clamps and fittings to match project standards, reducing unnecessary inventory. Application: Compatible with varied field conduit systems and installation practices. Feature: Color and material (red steel). Business Impact: High visibility and corrosion resistance improve safety and longevity in demanding plants. Application: Useful in outdoor or high-traffic indoor locations where quick identification aids maintenance.
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FAQs
TP404PFRED provides (4) side knockouts at 1/2 inch, plus (2) side knockouts of 1/2 inch + 3/4 inch EKO, (2) bottom knockouts of 1/2 inch and 3/4 inch, and (4) end knockouts of 1/2 inch plus (2) 1/2 inch + 3/4 inch EKO. This flexible layout supports varied conduit routing without adapters, making field installations faster and more reliable.
The box includes a ground screw with a pigtail lead, providing a continuous grounding path to the enclosure. This improves safety by ensuring proper fault clearance and reduces the risk of floating grounds. For equipment with multiple grounding points, the pigtail enables a consistent, code-compliant ground across connected devices.
This model is designed for ordinary/non-hazardous locations with NEC/CEC compliance. It is not rated for hazardous environments. For plants with potential exposure to flammable or explosive atmospheres, select enclosures with appropriate protection ratings and certifications and verify local code requirements before installation.
TP404PFRED adheres to NEC/CEC standards for ordinary locations. The product is designed to meet typical electrical enclosure requirements used in industrial panels and control cabinets. While UL certifications appear in related literature, the primary compliance focus for this box is NEC/CEC guidance suitable for non-hazardous settings.
The welded steel construction provides long-term durability, reducing replacement costs in rugged environments. The generous 22.0 in³ capacity minimizes wire crowding, while the ground screw with pigtail and flexible knockout layout speeds setup and future expansion. These factors translate to lower labor time, fewer field modifications, and improved uptime across maintenance cycles.