Rittal AS 4051.582 insulated ferrules yellow, copper/PP, 1.0 mm² cross-section, 12 mm length, pack of 500

Rittal AS 4051.582 insulated ferrules are termination sleeves designed for secure and consistent crimp connections on 1.0 mm² stranded conductors. Each ferrule has a copper conductor tube with a polypropylene (PP) insulated collar in yellow and a length of 12 mm. Supplied in a pack of 500 with a plastic collar, these ferrules are intended for use in control cabinets, electrical panels and industrial wiring where reliable, repeatable wire terminations are required.

Advantages

These insulated ferrules provide a reliable electrical and mechanical connection by preventing strand fraying and ensuring full conductor insertion into terminal clamps. The copper tube offers good conductivity while the polypropylene collar enables easy handling and insulation according to common colour coding practices. The 12 mm length accommodates typical terminal depths and supports secure crimps that reduce the risk of loose connections over time. The pack quantity of 500 supports medium to large installation projects and maintenance tasks.

Suitable for

• Termination of 1.0 mm² stranded copper conductors
• Wiring in control cabinets and distribution panels
• Industrial equipment wiring and machine connections
• Routine electrical installation and maintenance tasks

When it may not be suitable

These ferrules are specifically dimensioned for 1.0 mm² conductors and a 12 mm overall length; they are not appropriate for solid conductors or wire sizes significantly larger or smaller than 1.0 mm². For insulation materials or environmental requirements that demand higher temperature resistance or chemical resistance than polypropylene provides, alternative ferrules with different insulation materials should be considered.

Key specifications

• Conductor material: copper tube
• Insulation material: polypropylene (PP)
• Colour: yellow
• Nominal conductor cross-section: 1.0 mm²
• Overall length: 12 mm
• Packaging quantity: 500 pieces
• Collar type: plastic insulated collar for easy insertion and colour coding

How to use

Strip the conductor to the recommended stripping length so that the bare strands can be fully inserted into the copper tube. Insert the stripped end into the ferrule until the insulation collar meets the conductor insulation. Crimp the ferrule with a suitably sized insulated ferrule crimping tool, applying uniform pressure until a secure mechanical and electrical connection is obtained. After crimping, verify that the ferrule is firmly attached and that no strands are splayed. Install the terminated conductor into the terminal block or screw clamp as required.

What to consider before purchase

• Confirm conductor cross-section is 1.0 mm² for compatibility
• Ensure terminal depth and clamp type accept a 12 mm ferrule length
• Verify PP insulation is suitable for the operating temperature and environment
• Check packaging quantity (500) meets project or maintenance needs

Usage recommendations

Use an appropriate insulated ferrule crimping tool matched to 1.0 mm² ferrules to achieve consistent crimps. Store the ferrules in a dry place and keep them in original packaging until use to avoid contamination. For repeated maintenance or high-vibration applications, inspect crimped connections periodically and re-crimp or replace ferrules if any degradation is observed.