Ferrule Rittal AS 4051.695 – insulated copper ferrule 0.5 mm² (10 mm, Ø 2.6 mm), pack of 5000, white

Rittal AS 4051.695 is an insulated copper ferrule designed for terminating fine-stranded conductors reliably. The ferrule combines a copper crimp sleeve with a white polypropylene insulating collar, providing a neat, vibration-resistant connection for conductors with a nominal cross-section of 0.5 mm² (approx. AWG 20). Each ferrule has a sleeve length of 10 mm and an outer collar diameter of 2.6 mm. The product is supplied in a bulk pack of 5000 pieces for use in electrical panels, control cabinets and industrial wiring assemblies.

Advantages

The copper sleeve ensures low contact resistance and good conductivity while the polypropylene collar provides electrical insulation and mechanical protection at the termination point. The insulated design simplifies insertion into terminal blocks and prevents strand fraying during crimping. Supplied in a large pack of 5000, these ferrules are suited to repetitive assembly work and reduce downtime by ensuring consistent crimp quality.

Suitable for

• Terminating fine-stranded copper conductors with 0.5 mm² cross-section (AWG 20)
• Mass panel wiring, control cabinet assembly and industrial electrical installations
• Applications requiring reliable crimped connections and reduced contact resistance

When it may not be suitable

This ferrule is intended for conductors rated at 0.5 mm²; it is not suitable for larger or smaller conductor cross-sections where the sleeve will not fit or will not make proper contact. For applications requiring high-temperature insulation materials, specialty plating, or corrosion-resistant alloys, alternative ferrules or termination methods should be considered.

Key specifications

• Conductor cross-section: 0.5 mm² (approx. AWG 20)
• Sleeve length: 10 mm
• Insulating collar outer diameter: 2.6 mm
• Material (sleeve): copper
• Insulation material: polypropylene (PP), white
• Pack quantity: 5000 pieces

How to use

Strip the conductor to the appropriate length, insert the stranded conductor into the copper sleeve until the insulation collar meets the conductor insulation, and crimp the ferrule using a suitable crimping tool sized for 0.5 mm² ferrules. After crimping, verify that no strands are protruding and that the crimp is mechanically secure. Insert the terminated conductor into the terminal block or connector and tighten according to the connector manufacturer's torque specification.

What to consider before purchase

• Ensure conductor cross-section is 0.5 mm² (AWG 20) to match the ferrule internal diameter
• Confirm sleeve length (10 mm) and collar diameter (2.6 mm) fit your terminal or connector
• Verify that polypropylene insulation and copper sleeve meet temperature and environmental requirements of your installation
• Assess pack size (5000 pcs) against consumption to avoid excessive surplus

Usage recommendations

Use a calibrated crimping tool appropriate for insulated ferrules of this size and perform sample pull tests to confirm crimp quality. Store ferrules in a dry, clean environment to prevent contamination before use.