Rittal AS 4050.782 ferrules, copper/PP, 8 mm length, 4.8 mm diameter, pack of 500

Crimp ferrules Rittal AS 4050.782 are copper conductors with a polypropylene (PP) insulated collar, designed to provide secure terminations for stranded wires. Each ferrule measures 8 mm in overall length and has an outer diameter of 4.8 mm. Supplied in a pack of 500, these ferrules are intended for use in electrical control cabinets, terminal strips and distribution panels where reliable, repeatable crimp connections are required.

Advantages

These ferrules combine a tin-plated copper barrel for low-resistance electrical contact with a colored polypropylene collar that simplifies identification and handling. The rigid barrel prevents strand splaying during crimping, improving mechanical stability and electrical continuity. Supplied in a bulk pack of 500, they support efficient installation and maintenance workflows by reducing replenishment frequency.

Suitable for

• Terminating stranded conductors in control cabinets and electrical panels
• Crimp connections on terminal blocks and relay sockets
• Industrial automation wiring and switchgear assembly
• Maintenance and repair tasks requiring consistent, repeatable terminations

When it may not be suitable

These ferrules are intended for stranded copper conductors and may not be suitable for solid-core wires or non-copper conductors without verifying compatibility. They are not insulation displacement connectors and require a compatible crimping tool sized for the barrel and collar dimensions to achieve reliable connections.

Key specifications

• Material: copper barrel with polypropylene (PP) insulated collar
• Barrel length: 8 mm
• Outer diameter: 4.8 mm
• Finish: tin-plated copper (for improved corrosion resistance and conductivity)
• Pack quantity: 500 pieces

How to use

Strip the conductor to expose the appropriate length of strands, insert the stranded conductor fully into the ferrule barrel so the strands are contained, and use a matching crimping tool to compress the barrel and collar. After crimping, verify a secure mechanical hold and low electrical resistance by a visual and, if necessary, a pull test. Route and secure the terminated conductor in the terminal block or panel according to the installation standards in use.

What to consider before purchase

• Ensure ferrule barrel dimensions (length and diameter) match the cross-section of your stranded conductors
• Confirm compatibility of your crimping tool with ferrules having an 8 mm barrel length and 4.8 mm outer diameter
• Verify material suitability for your application environment (copper conductors, tin plating, and PP insulation)
• Consider pack size needs — bulk pack of 500 for medium to large installations

Usage recommendations

Use a calibrated crimping tool designed for insulated ferrules and perform occasional pull tests during installation to ensure consistent crimp quality. Store ferrules in a dry environment to avoid contamination of the barrel prior to assembly.