Ferrule Rittal AS 4051.598, copper/polypropylene insulated ferrules 0.5 mm² (10 mm length), pack 5000

Rittal AS 4051.598 insulated ferrules are crimp ferrules composed of a copper sleeve with a polypropylene (PP) insulating collar. Engineered for 0.5 mm² (AWG 20) conductors and providing a 10 mm insertion length, these ferrules ensure reliable termination for stranded wires used in control cabinets, electrical panels and wiring harnesses. The pack contains 5000 pieces and includes a plastic collar that supports insulated connections and facilitates consistent crimps.

Advantages

These ferrules combine a conductive copper tube with a polypropylene insulating collar to improve electrical contact and prevent fraying of stranded conductors. The consistent 10 mm insertion length helps to achieve uniform crimp quality across multiple terminations, while the insulated collar provides strain relief and reduces the risk of short circuits at connection points. Supplied in a bulk pack of 5000, they are suited for high-volume assembly and maintenance tasks.

Suitable for

• Termination of 0.5 mm² (AWG 20) stranded conductors in control cabinets
• Reliable crimp connections in distribution and terminal blocks
• Wire harness assembly and mass termination processes
• Maintenance and repair tasks requiring consistent insulated terminations

When it may not be suitable

These ferrules are specifically sized for 0.5 mm² (AWG 20) conductors and a 10 mm insertion length. They are not suitable for larger or smaller conductor cross-sections or for applications that require different insulation materials or higher temperature ratings than polypropylene provides. For single-strand solid conductors or terminals that require direct bare-wire contact without insulation, an alternative termination method may be preferable.

Key specifications

• Conductor cross-section: 0.5 mm² (AWG 20)
• Insertion length: 10 mm
• Inner material: copper sleeve for electrical conductivity
• Insulation: polypropylene (PP) collar
• Pack quantity: 5000 pieces
• Suitable for stranded wires and crimping tools designed for 0.5 mm² ferrules

How to use

Strip the conductor to the required length compatible with the 10 mm ferrule insertion depth, ensuring no damage to the wire strands. Insert the stripped stranded conductor fully into the copper sleeve until the insulation collar meets the wire insulation. Use an appropriate crimping tool or ferrule crimping die calibrated for 0.5 mm² ferrules to perform a secure crimp. After crimping, verify that the ferrule is firmly attached and that the insulated collar sits flush to provide strain relief and prevent exposed strands.

What to consider before purchase

• Confirm conductor cross-section compatibility (0.5 mm² / AWG 20) with your wiring
• Ensure your crimping tool supports 0.5 mm² ferrules and provides the correct die profile
• Consider the operating environment temperature and chemical exposure relative to polypropylene insulation
• Assess whether a different ferrule length or insulation type is required for specific terminal designs

Usage recommendations

For consistent, long-term connections, use a calibrated crimping tool and perform sample pull tests when installing multiple ferrules. Store the ferrules in a dry environment and match ferrule length to terminal depth to avoid incomplete insertion or exposed conductor strands.