The Eaton TP312 is a 4-inch octagon outlet box, part of the Crouse-Hinds series, designed for safe and secure electrical installations in residential, commercial, and industrial environments. Constructed from durable galvanized steel, this UL Listed electrical box provides a spacious 15.5 cubic inch capacity for housing electrical connections. Equipped with multiple knockouts for flexible wiring options, the TP312 ensures easy installation and code compliance.
Description
Technical Specifications
| Feature | Specification |
|---|---|
| Brand | Eaton (Crouse-Hinds Series) |
| Model Number | TP312 |
| Box Type | 4-Inch Octagon Outlet Box |
| Material | Galvanized Steel |
| Capacity | 15.5 Cubic Inches |
| Depth | 1-1/2 Inches |
| Knockouts | 7 total – 1 bottom (1/2″), 2 side (1/2″), 4 cable side |
| Mounting System | C-Bracket for secure installation |
| Grounding | Pre-installed ground screw |
| Certification | UL 514A/514B/514C Listed |
| Compliance | NEC, NEMA OS-1 Compliant |
| Application | Residential, Commercial, Industrial |
Key Features & Benefits
1. High-Quality Steel Construction
✔ Made from galvanized steel, ensuring durability and resistance to corrosion.
✔ Provides a strong, sturdy foundation for electrical connections.
2. Spacious 15.5 Cubic Inch Capacity
✔ Large interior allows for easy wiring and secure connections.
✔ Helps prevent overcrowding, reducing the risk of overheating.
3. Multiple Knockouts for Flexible Wiring
✔ Includes (7) total knockouts, offering various entry points for conduit and cables.
✔ Bottom Knockout: (1) 1/2-inch.
✔ Side Knockouts: (2) 1/2-inch knockouts.
✔ Cable Side Knockouts: (4) for flexible wiring setups.
4. Pre-Installed Ground Screw for Safety
✔ Enhances grounding efficiency, meeting electrical safety codes.
✔ Reduces installation time, eliminating the need for separate grounding components.
5. UL Listed & NEC/NEMA Compliant
✔ Certified for safety, ensuring a high-performance electrical system.
✔ Compliant with National Electrical Code (NEC) and NEMA OS-1 standards.
Common Applications
The Eaton TP312 octagon outlet box is ideal for:
🏡 Residential Wiring – Provides a reliable junction box for home electrical systems.
🏢 Commercial Installations – Supports electrical fixtures in offices and buildings.
🏭 Industrial Electrical Systems – Suitable for high-demand electrical applications.
💡 Ceiling Light Fixtures & Fans – Securely mounts lighting fixtures and ceiling fans.
Why Choose the Eaton TP312?
✔ Durable & High-Quality – Made from strong galvanized steel for long-lasting use.
✔ Safe & Code-Compliant – UL Listed, NEC & NEMA compliant for electrical safety.
✔ Versatile & Easy to Install – Multiple knockouts and C-bracket mounting for flexible wiring.

