Eaton TP578 Square Cover - 4-11/16 in, 5 cu in, NEC/CEC
Part Number: TP578
Quick Summary
The Eaton TP578 Square Cover is a durable steel lid designed for 4-11/16 in square boxes used in control panels and industrial enclosures. This solution addresses the common challenge of securing reliable, corrosion-resistant access points in non-hazardous environments while minimizing maintenance calls and field adjustments. It aligns with NEC and CEC requirements and is UL listed for steel square outlet boxes, with compatibility certifications for Canada as well. The raised 3/4 inch surface and natural finish simplify wiring access while ensuring a flush, secure seal. Using this cover supports fast installation, long service life, and safer, compliant electrical infrastructure for your facility.
Product Information
Extended Description
TP578 Eaton: Eaton Crouse-Hinds series Square Cover, 4-11/16", Natural, Raised surface, one device, Steel, 3/4" raised, 5.0 cubic inch capacity
Product Name
Eaton Crouse-Hinds series square cover
Catalog Number
TP578
UPC
786189105780
Product Length/Depth
4.69 in
Product Height
0.75 in
Product Width
4.69 in
Product Weight
0.42 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
Box size
4-11/16"
Capacity
5 cubic in
Color
Natural
Configuration
Raised surface, one device
Material
Steel
Type
3/4" raised
Eaton Crouse-Hinds TP578 3D drawing
Crouse-Hinds series 4-11/16 Inch Steel Square Boxes and Covers catalog page
4-11/16 Inch Steel Square Outlet Boxes, Covers, Extension Rings UL certification
4-11/16 Inch Steel Square Outlet Boxes, Covers, Extension Rings UL certification
Eaton Specification Sheet - TP578
Eaton Specification Sheet - TP578
Feature → Business Impact → Application: The TP578 uses a robust steel construction to provide enhanced durability against impact and wear, reducing replacement costs and downtime in busy facilities. This results in lower lifecycle costs for square box covers and improves reliability in control panels across manufacturing lines. Application-wise, it’s ideal for ordinary/non-hazardous locations where consistent performance and a clean finish matter.Feature → Business Impact → Application: The 3/4 inch raised surface offers easier device mounting and wiring access, improving installation efficiency by eliminating the need for auxiliary spacers or shims. In practice, technicians can complete panel wiring quicker and with fewer errors in electrical enclosures that demand fast turnarounds.Feature → Business Impact → Application: A 5 cubic inch capacity supports a single device configuration, optimizing space in 4-11/16 inch square boxes used in instrumentation and control stations. This helps maintain neat terminations and predictable enclosure interior layouts in automation panels.Feature → Business Impact → Application: NEC/CEC compliance and UL certification for 4-11/16 inch steel square boxes translate into regulatory confidence and safer field deployments. For engineering teams, this reduces risk during audits and facilitates procurement for compliant infrastructure in facilities that prioritize quality control and safety.Feature → Business Impact → Application: Natural steel with a raised surface matches the Crouse-Hinds series ecosystem, ensuring compatibility with existing enclosures and expansion plans. This minimizes spare parts inventory and streamlines maintenance across multiple sites that standardize on Eaton components.
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FAQs
The TP578 is specified specifically for 4-11/16 inch steel square boxes and features a raised 3/4 inch surface with a natural finish. Installation is straightforward: align with the box, secure with standard hardware, and verify device mounting without additional spacers. This minimizes setup time and reduces wiring errors in control panels.
Yes. TP578 is designed for Ordinary/Non-Hazardous Locations with NEC/CEC standards alignment. UL certification for the associated steel square outlet boxes and covers is documented in the Eaton datasheets and UL reports, providing regulatory assurance and simplifying compliance during audits and cross-site deployments.
TP578 is ideal for square outlet box covers in control panels, instrumentation cabinets, and industrial enclosures. Its 4-11/16 inch size, 5 cubic inch capacity, and raised surface support single-device configurations in areas where durability, ease of wiring, and safe access are critical for uptime and reliability.
Constructed from steel with a natural finish, the TP578 provides rugged durability and resistance to everyday industrial wear. The raised surface aids wiring access, while its compliance with NEC/CEC and UL listings reduces risk during inspections. This combination supports longer service life and safer maintenance in busy facilities.
Yes. Using a standardized, UL-listed TP578 cover across 4-11/16 inch square boxes minimizes parts variety and simplifies stocking. Its durable steel construction and regulatory compliance help reduce field failures, easing procurement, training, and maintenance across multiple sites while maintaining consistent safety standards.