Cable accessory Rittal 4051.729 orange polypropylene sleeve 12 mm x 4.8 mm pack of 500

Rittal 4051.729 is a pack of 500 orange polypropylene cable end sleeves designed to provide insulated, neat terminations for stranded conductors in control panels, wiring harnesses and industrial electrical installations. Each sleeve measures 12 mm in length with an internal diameter of approximately 4.8 mm, offering secure mechanical support and electrical insulation for conductor ends where a ferrule-style termination is needed.

Advantages

These polypropylene sleeves offer consistent dimensions and color coding for easy identification during assembly and maintenance. The orange color improves visibility inside cabinets and junction boxes, while the polypropylene material provides basic electrical insulation and resistance to common workshop oils and contaminants. Supplied in a bulk pack of 500, they are suitable for repeated use in production runs or for stocking in service kits.

Suitable for

• Insulating and protecting stranded conductor ends before insertion into terminal blocks or connectors
• Control panel wiring and industrial electrical installations
• Wiring harness assembly and repetitive manufacturing tasks
• Maintenance kits for service technicians and electricians

When it may not be suitable

These sleeves are intended for insulating and tidying conductor ends but are not plated or crimped ferrules designed for high-reliability crimping methods specified in certain standards. They may not provide the same mechanical retention or current-carrying performance as metal ferrules for high-current applications.

Key specifications

• Material: polypropylene (PP)
• Color: orange
• Length: 12 mm
• Inner diameter / nominal conductor fit: approximately 4.8 mm
• Pack quantity: 500 pieces

How to use

Select a sleeve that matches the conductor size, slide the sleeve onto the stripped end of the stranded conductor until it seats fully, and then insert the sleeved conductor into the terminal block or connector. No special tooling is required for basic application; however, for improved mechanical retention, use the appropriate crimping or insertion method recommended for your terminal type. Ensure the conductor insulation does not enter the sleeve and that the sleeve covers the bare strands completely.

What to consider before purchase

• Confirm the sleeve inner diameter and length are compatible with your conductor cross-section and terminal dimensions
• Evaluate whether a plated metal ferrule or crimp-type termination is required for your electrical or mechanical specification
• Consider the operating environment (temperature, chemicals) to ensure polypropylene is suitable
• Buy sufficient quantity based on assembly volume; packs of 500 are intended for medium to large runs

Usage recommendations

Use these sleeves to improve insulation quality and wiring appearance in control panels and harness assemblies. For high-current or vibration-prone applications, compare performance against metal ferrules and follow the terminal manufacturer’s recommendations for crimping and retention.