Introduction
This manual provides essential information for the safe and correct installation and use of the Penn-Union TP-4/0 4/0 AWG Aluminum Terminal Plug. Please read these instructions thoroughly before proceeding with installation to ensure proper function and safety.
Safety Information
Important Safety Instructions
- Always disconnect power before installing or servicing electrical connectors.
- Installation should be performed by qualified personnel only.
- Use appropriate personal protective equipment (PPE) such as insulated gloves and safety glasses.
- Ensure all connections are secure and meet local electrical codes and standards.
- This product is designed for aluminum conductors. Do not use with dissimilar metals unless specifically rated for such applications.
- Observe the maximum temperature rating of 257°F (125°C).
WARNING: This product may expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Product Overview
Product Description
The Penn-Union TP-4/0 is a high-quality aluminum terminal plug designed for connecting 4/0 AWG aluminum conductors. It ensures a reliable electrical connection in various industrial and scientific applications, functioning as a robust split-bolt type connector.

Image: Penn-Union TP-4/0 4/0 AWG Aluminum Terminal Plug. This image displays the aluminum terminal plug, highlighting its robust construction and design for secure electrical connections.
Installation Instructions
Installation Procedure
- Preparation: Ensure the power supply to the circuit is completely disconnected and verified. Clean the ends of the 4/0 AWG aluminum conductors to be connected, removing any insulation, oxidation, or debris.
- Insert Conductor: Loosen the bolt on the terminal plug sufficiently to allow insertion of the prepared aluminum conductor. Insert the conductor fully into the barrel of the terminal plug.
- Tighten Connection: Using an appropriate wrench, tighten the bolt on the terminal plug. Apply sufficient torque to ensure a secure mechanical and electrical connection. Refer to manufacturer's torque specifications if available. Avoid over-tightening, which can damage the conductor or connector.
- Verify Connection: Visually inspect the connection to ensure the conductor is fully seated and the bolt is tight. Perform continuity and resistance checks as required by local codes and safety standards.
- Insulate (if necessary): If the connection is exposed, apply appropriate electrical insulation (e.g., electrical tape, heat shrink tubing) to cover the terminal plug and exposed conductor parts, ensuring compliance with safety standards.
Maintenance
Maintenance Guidelines
The Penn-Union TP-4/0 terminal plug is designed for long-term reliability with minimal maintenance requirements.
- Periodically inspect connections for signs of corrosion, loosening, or overheating.
- If any issues are detected, disconnect power and re-secure or replace the connector as necessary.
- Keep the area around electrical connections clean and free from dust and moisture.
Specifications
Technical Specifications
| Feature | Detail |
|---|---|
| Model Number | TP 4/0 |
| Conductor Size | 4/0 AWG |
| Material | Aluminum |
| Contact Material | Aluminum |
| Terminal Type | Plug Connector |
| Temperature Rating | 257°F (125°C) |
| Item Weight | 1 Pound |
| Manufacturer | Penn-Union |
| ASIN | B00JV3IRK2 |
Customer Support
For technical assistance or further inquiries regarding the Penn-Union TP-4/0 Aluminum Terminal Plug, please contact Penn-Union customer service. Refer to the official Penn-Union website for current contact details.
Note: Warranty information is not available in the provided product data. Please consult the manufacturer's official documentation or website for current warranty terms.





