Cable end sleeve Rittal 4051.731 green polypropylene 12 mm length, 6.3 mm diameter, pack of 500

Rittal 4051.731 cable end sleeves are a pack of 500 green polypropylene ferrules, each 12 mm long with a 6.3 mm outer diameter. These sleeves are intended to secure and insulate the stripped ends of stranded conductors, providing a consistent termination surface for screw or spring-type terminal blocks. Manufactured from polypropylene, they offer a cost-effective option for neat, reliable wire terminations in control cabinets, distribution panels and various industrial wiring installations.

Advantages

The polypropylene construction provides electrical insulation and protection against fraying of stranded wires while remaining lightweight and chemically resistant. Standardized length and diameter ensure uniform crimps and predictable insertion into terminal points. Supplied in a pack of 500, they reduce the need for frequent reorder and support efficient, high-volume wiring tasks. The green colour allows quick visual identification when used within colour-coded wiring systems.

Suitable for

• Terminating stranded conductors for screw or spring terminal blocks
• Wiring and assembly in control cabinets and electrical panels
• Industrial automation and machinery wiring where consistent terminations are required
• Electrical maintenance and repair tasks requiring high quantities of ferrules

When it may not be suitable

These ferrules are designed for stranded conductors compatible with the stated physical dimensions; they are not appropriate for solid conductors that do not require ferrules. They are intended for general electrical insulation and mechanical support but are not a substitute for specialized high-temperature or halogen-free materials if those properties are required by the application or local regulations.

Key specifications

• Material: polypropylene (PP)
• Colour: green
• Length: 12 mm
• Outer diameter: 6.3 mm
• Quantity per pack: 500 pieces

How to use

Strip the conductor to the appropriate length, insert the stranded wire into the ferrule barrel until the insulation meets the sleeve collar, and crimp the ferrule using a hand or bench crimping tool rated for ferrules of this size. Verify the crimp for a solid mechanical hold and ensure the ferrule inserts cleanly into the intended terminal without deformation. Use color-coded ferrules consistently across circuits to maintain clear wiring identification.

What to consider before purchase

• Compatibility of ferrule length and diameter with the conductor cross-section and terminal style
• Material properties — polypropylene is not halogen-free nor specifically high-temperature rated
• Required quantity — pack of 500 may suit bulk wiring but may be excessive for small jobs
• Colour coding requirements for your installation and whether green is appropriate

Usage recommendations

Use a dedicated crimping tool sized for ferrules to achieve reliable terminations; inspect crimped joints visually and with a pull test when necessary. Store the pack in a dry, dust-free environment to maintain cleanliness of the ferrule barrels before use.