Rittal AS 4050.764 ferrules, copper with polypropylene insulation, 8 mm length, 2.8 mm diameter, pack of 500

Rittal AS 4050.764 ferrules are crimp terminals with a copper conductor tube and polypropylene (PP) insulation designed for safe and reliable wire termination in electrical panels, control cabinets and industrial wiring. Each ferrule measures 8 mm in total length with a 2.8 mm inner diameter and is supplied in a pack of 500, offering consistent crimp quality and a plastic collar that helps maintain insulation and mechanical stability at the termination point.

Advantages

These ferrules reduce strand fraying and improve contact reliability by concentrating conductor strands into a compact copper sleeve that is easy to crimp. The polypropylene insulation provides electrical isolation and a secure plastic collar for strain relief and organized wiring. Supplied in a bulk pack of 500, they are economical for repetitive assembly tasks and maintenance work, and their consistent dimensions facilitate repeatable crimping results with standard crimping tools.

Suitable for

• Termination of stranded copper conductors in control cabinets and switchboards
• Industrial wiring and machine assembly where consistent crimp quality is required
• Electrical panel assembly and field service tasks requiring insulated ferrules
• Applications needing a plastic collar for strain relief and easy insertion into terminal blocks

When it may not be suitable

These ferrules are designed for stranded copper conductors; they are not suitable for solid conductors, aluminum conductors, or applications requiring soldered terminations. They are sized for conductors that match an 8 mm length and 2.8 mm diameter ferrule—use of mismatched conductor sizes can lead to poor crimps or unreliable connections.

Key specifications

• Conductor sleeve material: copper
• Insulation material: polypropylene (PP)
• Overall ferrule length: 8 mm
• Inner diameter / nominal crimp diameter: 2.8 mm
• Plastic collar for strain relief and insulation
• Pack size: 500 pieces

How to use

Strip the conductor to the appropriate length so that the bare strands fully enter the copper sleeve. Insert the stripped stranded copper conductor into the ferrule until the insulation meets the plastic collar. Use a suitable insulated ferrule crimping tool sized for a 2.8 mm ferrule to apply a controlled crimp on the metal sleeve; confirm the crimp is secure and that the plastic collar seats against the cable insulation. After crimping, insert the ferrule into the terminal block or connector and tighten the terminal screw to the manufacturer's torque specification.

What to consider before purchase

• Match the ferrule inner diameter and length to the conductor cross-section and stripped length
• Ensure ferrules are appropriate for stranded copper conductors rather than solid or aluminum wires
• Confirm compatibility with your crimping tool and terminal block spacing
• Buy in bulk quantities like a pack of 500 only if you will use them routinely to avoid storage degradation

Usage recommendations

For consistent results, use a calibrated ferrule crimping tool designed for insulated ferrules and periodically inspect crimps for compression and conductor retention. Where required, follow applicable electrical codes and terminal manufacturer torque values when securing ferrules in connectors.