COL50B Partex copper tube butt connector, 50mm², pack 30

COL50B Partex copper tube butt connector, 50mm², pack 30

Partex COL50B 50 mm² uninsulated copper tube butt connector with tin-plated copper construction, designed for secure straight-through crimp connections between copper power cables in industrial electrical installations and supplied in a pack of 30.

SKU: COL50BMPN: COL50B
Price
List Price £40.43 ex VAT
Your Price (ex VAT)
£40.43
£40.43 per pack of 30 · £1.35 each
Manufacturer Lead Time Please contact us for a delivery time before you order
Get the best trade prices Trade exclusive

Create a trade account to unlock exclusive pricing, special offers and more.

SUBTOTAL (EX VAT) £40.43
Trade pricing is personalised to your account

Manufacturer Lead Time

£40.43

Why Choose the Partex COL50B 50mm² Copper Tube Butt Connector?

The Partex COL50B is a heavy-duty 50 mm² copper tube butt connector designed to provide secure, reliable and durable straight-through electrical connections between copper conductors. Manufactured for professional electrical installations and industrial applications, this uninsulated crimp connector is ideal for joining power cables in electrical distribution systems, industrial machinery, control panels and cable maintenance applications.

As part of the Partex COLB copper tube butt connector range, the COL50B features a robust tubular copper construction designed to support efficient electrical conductivity and dependable mechanical retention when correctly crimped. Its protective tin-plated finish helps resist oxidation and corrosion, while the straight-through barrel design allows two compatible copper conductors to be joined using suitable compression crimping equipment.

Designed for 50 mm² copper cables, the COL50B provides a practical solution for larger conductor connections where reliable electrical continuity and mechanical strength are important. The connector is supplied uninsulated, allowing installers to apply suitable heat-shrink sleeving or other protective insulation according to the installation requirements. Supplied in a convenient pack of 30 connectors, it is suitable for electrical contractors, industrial maintenance engineers, panel builders and power distribution specialists.

Key Advantages

  • Heavy-duty 50 mm² copper tube butt connector for professional electrical cable joining.
  • High-conductivity copper construction supports efficient electrical current transfer.
  • Tin-plated finish helps protect the connector against oxidation and corrosion.
  • Straight-through tubular design enables secure joining of two compatible copper conductors.
  • Robust crimp barrel provides dependable mechanical retention when correctly installed.
  • Suitable for permanent electrical cable splices using appropriate crimping equipment.
  • Compact inline configuration helps maintain a straightforward cable routing arrangement.
  • Uninsulated construction allows installers to select suitable insulation and environmental protection.
  • Ideal for industrial power distribution, electrical equipment and cable maintenance applications.
  • Supplied in a pack of 30 for convenient purchasing and professional installation work.

Key Features

  • Partex COLB copper tube butt connector series.
  • 50 mm² nominal conductor cross-sectional area.
  • High-conductivity copper tube construction.
  • Protective tin-plated surface finish.
  • Straight-through cable-to-cable connection design.
  • Heavy-duty tubular barrel for compression crimp termination.
  • Designed to join two compatible copper conductors of the same nominal cross-sectional area.
  • Suitable for permanent electrical connections using appropriate crimping tooling.
  • Uninsulated construction for application-specific insulation requirements.
  • Suitable for industrial electrical distribution and machinery wiring.
  • Designed for use with compatible copper cables and correctly sized crimping dies.
  • Pack quantity: 30 connectors.

Reliable Copper Cable Connections for Industrial Power Distribution

Copper tube butt connectors such as the Partex COL50B provide a dependable method of joining two electrical conductors in a straight-through configuration. Each prepared cable end is inserted into the appropriate side of the tubular connector and secured using a suitable compression crimping tool and die. When correctly installed, the resulting joint provides reliable electrical contact and mechanical retention.

The COL50B is designed for 50 mm² copper conductors used in industrial electrical systems, power distribution equipment and machinery installations. Its copper construction supports efficient current transfer through the connection, while the protective tin-plated surface helps reduce oxidation and corrosion during normal service conditions.

The straight-through connector configuration allows cables to be joined without the need for a separate bolted terminal or mounting stud. This makes copper tube butt connectors particularly useful for inline cable extensions, electrical repairs and permanent conductor splices where a compact connection is required.

For correct installation, conductors should be stripped to the appropriate length without damaging the copper strands, fully inserted into the connector and crimped using suitable tooling. As the COL50B is uninsulated, the completed joint must be provided with appropriately rated insulation and environmental protection where required. The complete cable splice must be suitable for the circuit current, operating voltage, conductor construction and installation conditions.

Typical Applications

  • Joining 50 mm² copper electrical cables in industrial installations.
  • Industrial power distribution and electrical distribution equipment.
  • Electrical cable extensions and permanent inline splices.
  • Industrial machinery and heavy-duty electrical equipment.
  • Switchgear assemblies and power distribution panels.
  • Motor control centres and associated power cable installations.
  • OEM electrical equipment manufacturing and assembly.
  • Commercial and industrial electrical infrastructure.
  • Electrical cable repairs, maintenance and equipment refurbishment.
  • Professional electrical installations requiring reliable 50 mm² copper conductor connections.

Technical Specifications

Tick the specs you need, then view products that match.

Suitable Conductor Material Copper
Device Type Butt / Through Connector
Conductor Size 50 mm²
Material Copper
Manufacturer Partex
Series COLB Copper Tube Butt Connectors
Model COL50B
Product type Copper tube butt connector / inline cable splice
Conductor cross-sectional area 50 mm²
Connector material High-conductivity copper
Surface finish Tin plated
Connector configuration Straight-through tubular connector
Insulation Uninsulated
Connection type Cable-to-cable inline splice
Termination method Compression crimping
Conductor compatibility Copper conductors
Nominal conductor size 50 mm² at each end
Installation Suitable copper tube connector crimping tool and die
Application Electrical cable joining and power conductor splicing
Pack quantity 30 pieces
HS Code 74031900

Frequently Asked Questions

What is the Partex COL50B copper tube butt connector used for?

The Partex COL50B is used to create secure straight-through electrical connections between two 50 mm² copper conductors. It is suitable for industrial power distribution, electrical cable extensions, machinery wiring and permanent cable splicing applications.

What cable size is suitable for the Partex COL50B?

The COL50B is designed for copper conductors with a nominal cross-sectional area of 50 mm². Both cable ends should be compatible with the connector barrel and correctly crimped using suitable tooling.

What material is the Partex COL50B manufactured from?

The connector is manufactured from high-conductivity copper with a protective tin-plated finish. The copper construction supports efficient electrical conductivity, while the plating helps protect the connector against oxidation and corrosion.

Is the Partex COL50B copper tube butt connector insulated?

No. The Partex COL50B is an uninsulated copper tube butt connector. After crimping, suitable insulation such as appropriately rated heat-shrink tubing should be applied where required to provide electrical insulation and environmental protection.

How many Partex COL50B butt connectors are supplied?

This product is supplied in a pack of 30 copper tube butt connectors, making it suitable for electrical contractors, industrial maintenance teams and professional cable installation projects.

Trusted by Electrical Installers and Industrial Engineers

Partex copper tube butt connectors provide practical and dependable cable joining solutions for professional electrical installations. The COL50B combines a robust 50 mm² copper tubular barrel with a protective tin-plated finish, helping electrical contractors, panel builders and maintenance engineers create secure inline conductor connections in industrial power distribution systems, machinery and electrical equipment.

● Service Agreements

Credit Accounts

Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.

 Priority sourcing and supply support

 Flexible payment terms for qualifying organisations

 Support for engineering, maintenance, and operations

500 +

Stock lines ready to ship

1,000 +

Same day dispatches

3500 +

Customers supported

28 

Trusted Manfacturers

● frequently asked questions

Common questions about our products and support

 

At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.

What product ranges do you supply

We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products. 

Can you help specify the correct part?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

Do you have stock for urgent orders?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What are your delivery times and costs?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What about warranties, returns and faulty items?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

● latest blog

Discover  our latest insights and
expert advice

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.

LED Controls: Danfoss Drives Authorised Partner

LED Controls: Danfoss Drives Authorised Partner

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...

LED Controls: Your Complete Control Panel Solution

LED Controls: Your Complete Control Panel Solution

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...