Terminal ferrules Rittal AS 4050.779, copper polypropylene, length 8 mm, diameter 2.8 mm, white

Rittal AS 4050.779 ferrule with plastic collar is a small electrical termination component designed to provide a reliable connection for stranded wires. The ferrule combines a copper crimp sleeve with a polypropylene (PP) plastic collar and comes in white colour. It is specified for an 8 mm length and a 2.8 mm diameter, suitable for neat, secure wire terminations in control cabinets and electrical enclosures.

Advantages

The combination of a copper sleeve and polypropylene collar ensures good electrical conductivity together with mechanical protection at the wire end. The plastic collar aids alignment during insertion into terminals and helps prevent fraying of stranded conductors. Its compact dimensions (8 mm length, 2.8 mm diameter) make it appropriate for use in confined terminal strips and dense wiring assemblies.

Suitable for

• Crimping onto stranded copper conductors to form a secure termination
• Use in industrial control cabinets, distribution blocks and terminal strips
• Applications requiring colour-coded ferrules for identification (white collar)

When it may not be suitable

Not suitable for use with solid conductors or non-copper conductors where a different termination method is required. It may also be unsuitable for very large gauge wires that exceed the physical diameter or current-carrying capacity implied by the 2.8 mm diameter specification.

Key specifications

• Material: Copper sleeve, polypropylene (PP) plastic collar
• Colour: White
• Length: 8 mm
• Diameter: 2.8 mm

How to use

Strip the conductor to the appropriate length, insert the stranded copper wire fully into the ferrule so that strands are contained within the copper sleeve, and crimp the ferrule using a suitable crimping tool for insulated or uninsulated ferrules. After crimping, insert the ferrule into the terminal and tighten the terminal screw to secure the connection.

What to consider before purchase

• Confirm compatibility with the conductor cross-section and terminal dimensions
• Verify that a white collar meets your colour-coding or identification requirements
• Ensure you have a suitable crimping tool for ferrules of this size

Usage recommendations

Use the ferrule with appropriately sized stranded copper conductors and a matched crimping tool to achieve a reliable electrical and mechanical connection; avoid using it on solid conductors or on wires that exceed the ferrule's diameter.