Copper crimp ferrules Rittal AS 4050.774, insulated polypropylene sleeve, length 8 mm, diameter 2.8 mm, white

Rittal AS 4050.774 is a ferrule with a plastic collar designed to improve the reliability of wire terminations. It combines a copper conductive sleeve with a polypropylene (PP) insulated collar and is supplied in white colour. The product is intended for crimping onto stranded conductors to provide a secure, corrosion‑resistant connection and to prevent stray strands from causing shorts.

Advantages

The copper sleeve ensures good electrical conductivity and corrosion resistance while the polypropylene collar provides insulation and strain relief at the wire termination. Its small dimensions make it suitable for compact electrical panels and dense terminal blocks. The white collar colour helps with visual identification and colour‑coded wiring schemes.

Suitable for

• Crimping onto stranded copper conductors to form insulated ferrules
• Use in control cabinets, terminal blocks, and junction blocks
• Applications requiring clear colour coding and compact wire termination

When it may not be suitable

The ferrule is intended for relatively small conductor sizes (length 8 mm, sleeve diameter 2.8 mm) and may not be appropriate for larger gauge wires or high‑current applications. It is not designed for direct exposure to extreme temperatures or aggressive chemicals; in such environments, select ferrules or terminals specified for those conditions.

Key specifications

• Material: copper sleeve with polypropylene (PP) insulating collar
• Colour: white (insulating collar)
• Length: 8 mm
• Sleeve diameter: 2.8 mm

How to use

Strip the conductor to the correct length so the bare wire fully inserts into the copper sleeve. Insert the stranded conductor into the ferrule until the insulation meets the collar, then crimp using an appropriate insulated ferrule crimping tool following the tool manufacturer's instructions. After crimping, verify a firm mechanical and electrical connection and that no wire strands protrude.

What to consider before purchase

• Confirm the ferrule dimensions (length 8 mm, sleeve diameter 2.8 mm) match the conductor cross‑section and terminal requirements
• Ensure the polypropylene collar and copper sleeve meet the environmental and electrical demands of your application
• Verify colour‑coding needs—white collar may be used for specific wiring schemes

Usage recommendations

Use a properly sized insulated ferrule crimping tool and inspect each crimp for mechanical security and correct insulation position; store ferrules in a dry, clean environment to prevent contamination before installation.