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COL70B Partex copper tube butt connector, 70mm², pack 30
Partex COL70B is an uninsulated, electro-tin-plated copper tube butt connector for joining two 70 mm² copper conductors, featuring a 12 mm internal diameter, 15 mm external diameter, 45 mm length and inspection holes, supplied in a pack of 30.
£47.90
Why Choose the Partex COL70B Copper Tube Butt Connector?
The Partex COL70B is a robust copper tube butt connector designed to join two compatible 70 mm² copper conductors in a secure, permanent electrical connection. Suitable for industrial electrical installations, power distribution systems and cable maintenance, this tubular crimp connector provides a practical solution for extending or repairing copper power cables.
As part of the Partex COL copper tube connector range, the COL70B features a straight tubular construction that allows conductors to be inserted from opposite ends and joined through mechanical crimping. Its copper body provides excellent electrical conductivity, helping maintain a low-resistance connection when correctly installed using compatible crimping equipment.
Designed specifically for 70 mm² copper cable connections, the COL70B is suitable for applications where reliable conductor continuity and mechanical strength are essential. Unlike ring terminals and cable lugs, this butt connector joins two cable ends directly without requiring a bolted fixing point. Supplied in a pack of 30 connectors, it is an economical and convenient choice for electrical contractors, industrial maintenance engineers and panel builders.
Key Advantages
- 70 mm² conductor compatibility for joining copper power cables of the same nominal cross-section.
- Straight-through butt connector design provides an efficient end-to-end cable connection.
- Copper construction supports excellent electrical conductivity.
- Crimp termination provides a secure mechanical and electrical joint when correctly installed.
- Compact tubular design simplifies cable joining in electrical installations.
- Suitable for cable extension, repair and maintenance applications.
- Eliminates the need for bolted terminal connections when joining compatible cable ends.
- Pack of 30 connectors offers convenient quantities for electrical installation and maintenance projects.
Key Features
- Partex COL series copper tube butt connector.
- 70 mm² nominal conductor cross-section.
- Straight tubular butt splice configuration.
- Copper connector body for effective electrical current transfer.
- Two-ended conductor entry for joining compatible copper cables.
- Designed for mechanical crimping using appropriate cable connector tooling.
- Suitable for permanent electrical cable joints when correctly installed.
- Compatible with appropriately sized 70 mm² crimping tools and dies.
- Uninsulated construction allows the completed connection to be insulated using a suitable approved method.
- Suitable for industrial electrical distribution and cable maintenance applications.
- Supplied as a pack of 30 pieces.
Reliable Copper Cable Jointing for Industrial Electrical Systems
Copper tube butt connectors are designed to create continuous electrical connections between two cable ends. The Partex COL70B accommodates compatible 70 mm² copper conductors inserted from opposite ends of its tubular body. Each conductor is secured using a suitable crimping tool, creating a mechanically stable and electrically conductive joint.
The straight-through configuration makes the COL70B particularly useful for cable extensions, repairs and conductor splicing in industrial power distribution and electrical installations. Its compact design enables cables to be joined without introducing additional bolted connection points or terminal hardware.
For dependable performance, conductors should be correctly stripped, inserted and crimped using tooling suitable for the connector and cable construction. Both ends must be properly secured, and the completed joint should be insulated and protected according to the operating voltage, installation environment and applicable electrical standards. Where required, suitable heat-shrink insulation or an approved cable jointing system should be used.
Typical Applications
- Industrial copper power cable jointing and extension.
- Electrical distribution systems and power cable installations.
- Low-voltage electrical cable repair and maintenance.
- Industrial machinery and equipment wiring.
- Electrical control panels and distribution cabinet wiring.
- Motor power cable extensions and repairs.
- OEM electrical equipment assembly and manufacturing.
- Electrical installation refurbishment and maintenance.
- Copper conductor splicing within suitable cable jointing systems.
- Industrial applications requiring reliable 70 mm² cable-to-cable connections.
Technical Specifications
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| Suitable Conductor Material | Copper | |
|---|---|---|
| Device Type | Butt / Through Connector | |
| Conductor Size | 70 mm² | |
| Material | Copper | |
| Manufacturer | Partex | |
| Series | COL Copper Tube Connectors | |
| Model | COL70B | |
| Product type | Copper tube butt connector / cable splice | |
| Nominal conductor size | 70 mm² | |
| Connector configuration | Straight-through butt splice | |
| Material | Copper | |
| Conductor compatibility | Copper cable | |
| Number of cable entries | 2 | |
| Connection method | Mechanical crimping | |
| Terminal style | Tubular cable-to-cable connector | |
| Insulation | Uninsulated | |
| Installation tooling | Suitable 70 mm² crimping tool and die | |
| Pack quantity | 30 pieces | |
| HS Code | 74031900 |
Frequently Asked Questions
What is the Partex COL70B used for?
The Partex COL70B is a copper tube butt connector used to join two compatible 70 mm² copper conductors. It is commonly used for electrical cable extensions, repairs and permanent crimped joints in industrial power distribution and electrical installations.
What cable size is compatible with the COL70B?
The connector is designed for 70 mm² copper conductors. Both cable ends must be compatible with the connector barrel dimensions and the specified crimping method.
How is the Partex COL70B installed?
The cable ends are stripped to the appropriate length and inserted into opposite ends of the connector. Each side is then mechanically crimped using a suitable 70 mm² crimping tool and die to form a secure electrical and mechanical connection.
What is the difference between a butt connector and a cable lug?
A butt connector joins two cable ends directly to form a continuous conductor connection, whereas a cable lug typically terminates a conductor onto an equipment terminal, stud or busbar. The COL70B is designed for cable-to-cable connections rather than bolted terminal fixing.
What material is the COL70B manufactured from?
The COL70B is manufactured from copper, providing good electrical conductivity for joining compatible copper conductors in industrial electrical installations.
Does the COL70B require additional insulation?
Yes. The COL70B is an uninsulated copper tube connector. After crimping, the joint must be insulated and protected using a method suitable for the circuit voltage, installation conditions and applicable electrical requirements.
How many connectors are included in a pack?
The Partex COL70B is supplied in a pack of 30 copper tube butt connectors, suitable for electrical installation, cable jointing and industrial maintenance applications.
Trusted by Electrical Installers and Industrial Maintenance Engineers
Partex copper tube connectors provide practical solutions for professional cable termination and jointing. The COL70B offers a straightforward method of joining 70 mm² copper conductors, combining a conductive copper body with a robust crimp connection for dependable electrical continuity in industrial installations and maintenance applications.
