Rittal AS 4050.783 copper polypropylene ferrules 12 mm length, 4.8 mm diameter, pack of 500

Rittal AS 4050.783 copper polypropylene ferrules are termination sleeves designed to provide reliable electrical contact and consistent crimping for stranded conductors. Each ferrule combines a copper conductive tube with a polypropylene insulating collar, measures 12 mm in length and has an outer diameter of 4.8 mm. Supplied as a pack of 500, these ferrules are intended for use in panel wiring, control cabinets and other industrial electrical installations where repeatable, secure conductor connections are required.

Advantages

These ferrules offer a defined copper contact area that improves electrical continuity and reduces the risk of stray strands. The polypropylene collar supports insulation and simplifies insertion into terminal blocks and screw clamps. Consistent dimensions and material choice help achieve uniform crimp quality across multiple conductors, while the bulk pack format supports larger wiring jobs and maintenance tasks.

Suitable for

• Terminating stranded copper conductors for screw-terminal and spring-clamp connections
• Panel and control-cabinet wiring in industrial and commercial installations
• Mass termination tasks and electrical maintenance where many identical ferrules are needed

When it may not be suitable

These ferrules are intended for use with copper conductors; they are not suitable for aluminium conductors or mixed-metal terminations unless proper transition treatments or bi-metallic components are used. They are also not insulated for high-voltage clearances beyond the collar rating, so applications requiring larger creepage distances or specialized insulating boots should use purpose-designed components.

Key specifications

• Tube material: copper conductive sleeve
• Collar material: polypropylene insulating collar
• Length: 12 mm
• Outer diameter: 4.8 mm
• Quantity: pack of 500 ferrules

How to use

Strip the conductor to the appropriate length so the strands fully enter the ferrule tube without exposed wire beyond the collar. Insert the stripped conductor into the ferrule until it seats against the collar, then crimp using a suitable insulated ferrule crimping tool sized for the ferrule diameter. After crimping, verify mechanical retention and electrical continuity. Insert the crimped ferrule into the terminal and tighten the screw or engage the spring clamp according to terminal manufacturer instructions.

What to consider before purchase

• Confirm compatibility with the conductor cross-section and the terminal type used in your installation
• Ensure your crimping tool matches the ferrule dimensions to achieve reliable crimps
• Verify that polypropylene collar and ferrule dimensions meet any clearance or insulation requirements for your application

Usage recommendations

Use these ferrules for stranded copper conductors within their specified size range, apply the correct strip length and crimp tool, and store the pack in a dry environment to preserve the polypropylene collar and copper surface quality.