Ferrule Rittal AS 4051.683 – insulated copper ferrules 0.5 mm², length 12 mm, diameter 2.9 mm, white, pack of 500

Rittal AS 4051.683 insulated copper ferrules are termination sleeves designed for reliable connection of 0.5 mm² conductors. Each ferrule combines a tin-plated copper tube for conductive contact with a polypropylene (PP) insulating collar in white, providing a solid crimp surface, improved contact quality and protection against strand fraying. The ferrules are 12 mm long with a 2.9 mm outer diameter and are supplied in a pack of 500, suitable for repetitive wiring tasks in control cabinets and general electrical installations.

Advantages

The combination of a conductive copper core and a PP insulated collar ensures consistent crimping results and durable electrical contact. The white insulation aids visual identification and neat wiring runs. The 12 mm length gives sufficient insertion depth for secure crimping on 0.5 mm² conductors while the 2.9 mm outer diameter matches common crimp ferrule tooling. Supplied in a bulk pack of 500, these ferrules reduce handling time and are convenient for panel assembly and maintenance work.

Suitable for

• Terminating single-strand and multi-strand conductors with 0.5 mm² cross-section
• Crimping with manual or ratchet crimp tools designed for insulated ferrules
• Wiring and rework inside control cabinets, distribution boxes and terminal strips
• Batch wiring tasks where consistent, repeatable terminations are required

When it may not be suitable

These ferrules are specifically sized for 0.5 mm² conductors; they are not suitable for significantly larger or smaller conductor cross-sections. For applications requiring heat-shrink insulation, corrosion-resistant alloys beyond tin-plated copper, or extreme environmental sealing, alternative termination solutions should be considered.

Key specifications

• Conductor cross-section compatibility: 0.5 mm²
• Length: 12 mm
• Outer diameter: 2.9 mm
• Material (tube): copper with tin plating for improved contact
• Insulation material: polypropylene (PP), white
• Packaging quantity: 500 pieces per pack

How to use

Strip the conductor to the appropriate length so that the bare conductor can be fully inserted into the ferrule tube. Insert the conductor until it seats against the insulation collar, then apply a compatible crimping tool centered on the metal sleeve. Use a tool suitable for insulated ferrules to achieve the correct crimp profile and tensile strength. After crimping, visually inspect the termination to ensure there is no exposed strand fraying and that the insulation collar is undamaged. Insert the crimped ferrule into the terminal or connector and fasten according to the connector manufacturer's instructions.

What to consider before purchase

• Confirm conductor cross-section is 0.5 mm² to ensure compatibility
• Verify your crimping tool supports insulated ferrules of this length and diameter
• Consider the required insulation color coding and whether white meets your wiring standard
• Ensure bulk pack quantity (500) matches your project scale and storage needs

Usage recommendations

For consistent results, use a calibrated crimping tool rated for insulated ferrules and perform sample pull tests during production or installation. Store the ferrules in a dry environment to avoid contamination of the tin-plated surface and keep the pack sealed until use to maintain cleanliness.