Eaton TP339 Octagon Outlet Box - 4 in NEC/CEC
Part Number: TP339
Quick Summary
The Eaton TP339 octagon outlet box provides durable, code-compliant enclosure for wiring terminations in industrial control panels. Engineers often contend with cramped spaces and non-compliant boxes that slow assembly and jeopardize safety. It carries NEC/CEC standards and Ordinary/Non-Hazardous Location ratings, making it suitable for standard steel covers and 4 in box installations. This enclosure delivers predictable fit and straightforward mounting, reducing field rework and speeding up project timelines. By aligning with common automation infrastructure needs, the TP339 supports reliable terminations in control cabinets, motor starters, and junction boxes while helping procurement meet regulatory requirements and budget targets.
Product Information
Extended Description
TP339 Eaton: Eaton Crouse-Hinds series Octagon Outlet Box, 4", 21.5 cubic inch capacity
Product Name
Eaton Crouse-Hinds series octagon outlet box
Catalog Number
TP339
UPC
786189103397
Product Length/Depth
4 in
Product Height
2.13 in
Product Width
4 in
Product Weight
0.66 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
Box size
4"
Capacity
21.5 cubic in
Crouse-Hinds series Steel Octagon Boxes, Covers, Adjustable Bar Hangers and Ceiling Pans catalog page
Steel Octagon Boxes, Covers, Adjustable Bar Hangers and Ceiling Pans Canadian certification
Steel Octagon Boxes, Covers, Adjustable Bar Hangers and Ceiling Pans Canadian certification
Steel Outlet Boxes for Electrical Systems
Steel Outlet Boxes for Electrical Systems
Feature: The TP339 uses a 4 inch box with a 21.5 cubic inch capacity. This size provides room for conductors, connectors, and splices, reducing cramped layouts and field rework. It’s ideal for control panels and junction boxes in automation and manufacturing environments. Feature: Steel Crouse-Hinds construction delivers robust protection for demanding industrial settings, supporting long service life and reliable progress in installation projects. This reduces maintenance intervals and minimizes unexpected downtime in production lines. Feature: Compact dimensions at 4 in width and 2.13 in height with a lightweight 0.66 lb weight enable easy handling and mounting in tight cabinets, with straightforward alignment to standard covers. Feature: NEC/CEC compliance paired with Ordinary/Non-Hazardous Location ratings provides regulatory confidence for US and multi-site deployments, simplifying procurement and reducing compliance risk across facilities. Feature: Broad accessory compatibility within the Crouse-Hinds steel family—covers, adjustable bar hangers, and ceiling pans—streamlines purchasing and installation, lowering total cost of ownership and speeding up project schedules.
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FAQs
TP339 is designed to align with standard Crouse-Hinds steel octagon boxes and compatible covers. Its 4 in box size and 21.5 cu in capacity provide sufficient internal space for typical conductor terminations, connectors, and splices. This compatibility minimizes custom fabrication and speeds up installation in control panels and junction boxes, while maintaining secure grounding and routing.
TP339 supports NEC/CEC standards and is rated for Ordinary/Non-Hazardous Locations. This means it meets regulatory requirements for general purpose electrical installations in non-hazardous environments, reducing rework and ensuring consistent performance across US and Canadian facilities when paired with appropriate covers and accessories.
Yes, TP339 is supported by the Canadian certification framework referenced in UL/CSA documentation. For assurance, refer to the Canadian certification listings in the Eaton/Crouse-Hinds documentation set, including UL-based Canadian approvals listed with the Steel Octagon Boxes catalog references and related datasheets.
TP339 is a 4 inch box with a height of 2.13 inches and a width/depth of 4 inches, offering a total capacity of 21.5 cubic inches. Plan for conductor bundles, connectors, and termination hardware within this space, and pair with standard 4 inch covers to maintain a secure, compliant enclosure in automation equipment.
Use the TP339 with compatible Crouse-Hinds steel covers and bar hangers to simplify mounting. Ensure proper grounding by connecting to the chassis or enclosure ground, and organize conductors with strain relief where applicable. The standard dimensions and compatibility with the Crouse-Hinds accessory family help reduce part variety and speed up procurement and field assembly.