Ferrule Rittal AS 4051.687, copper polypropylene ferrule 1.0 mm², length 12 mm, diameter 3.5 mm, pack of 500

Rittal AS 4051.687 ferrules are insulated wire end sleeves designed for secure termination of 1.0 mm² conductors. Each ferrule features a copper crimp barrel with a red polypropylene insulating collar, measuring 12 mm in length and approximately 3.5 mm in outer diameter. Supplied in a pack of 500, these ferrules are intended for use in control cabinets, terminal strips and wiring harnesses where reliable electrical connection and protection of stranded conductors are required.

Advantages

These ferrules combine a copper conductive core with a polypropylene insulating collar to ensure good electrical contact and improved mechanical stability at the conductor termination. The standard length and diameter support consistent crimping and insertion into terminal blocks, reducing the risk of stray strands and improving connection reliability. Supplied in a bulk pack, they are suitable for repetitive installations and service operations, reducing handling time and ensuring a consistent supply of matching ferrules.

Suitable for

• Crimp termination of stranded copper conductors rated 1.0 mm²
• Wiring in control cabinets and distribution panels
• Terminal blocks, relays and contactors with matching wire entry
• Electrical harness assembly and repair work
• Maintenance work requiring bulk quantities of insulated ferrules

When it may not be suitable

These ferrules are specified for conductors with a cross-sectional area of 1.0 mm²; they are not suitable for larger or smaller conductor sizes. They are intended for copper conductors and should not be used with aluminum or dissimilar metals without appropriate transition measures. The polypropylene collar provides basic insulation and strain relief but is not a substitute for full insulation or environmental sealing in exposed or harsh outdoor conditions.

Key specifications

• Conductor nominal cross-section: 1.0 mm²
• Barrel material: copper
• Insulation material: polypropylene (polymer collar)
• Insulation color: red
• Overall length: 12 mm
• Approximate outer diameter: 3.5 mm
• Pack quantity: 500 pieces

How to use

Strip the conductor to the recommended length, insert the stranded copper conductor fully into the ferrule barrel so that no strands protrude, and crimp the ferrule with an appropriate insulated ferrule crimping tool sized for 1.0 mm² ferrules. After crimping, verify the mechanical retention and electrical continuity; then insert the ferrule into the terminal or connector and secure the screw or clamp according to the terminal manufacturer's instructions. Follow standard safety practices for live or energized wiring.

What to consider before purchase

• Confirm conductor size: suitable for 1.0 mm² stranded copper conductors only
• Verify terminal entry dimensions to match the ferrule length and diameter
• Ensure you have the correct crimping tool for insulated ferrules of this size
• Consider pack quantity (500) relative to project needs and storage

Usage recommendations

Use a dedicated insulated ferrule crimping tool calibrated for 1.0 mm² ferrules and perform sample pulls to confirm crimp quality. Store ferrules in a dry environment and keep them in original packaging until use to maintain cleanliness. For installations exposed to vibration or harsh conditions, combine proper crimping with appropriate cable routing and strain relief measures.