Terminal ferrules Rittal AS 4051.542, copper core with polypropylene insulation, 1.0 mm² (AWG 18), length 8 mm, pack 4000

Rittal AS 4051.542 insulated ferrules are designed for reliable termination of 1.0 mm² (AWG 18) conductors. Each ferrule has a copper core and a polypropylene (PP) insulating collar, with a total length of 8 mm. Supplied in a pack of 4000, these ferrules are intended for consistent crimp connections in electrical panels, control cabinets and wiring harnesses where a secure conductor end is required.

Advantages

The copper core offers good electrical conductivity and mechanical strength while the polypropylene insulation provides electrical isolation and strain relief at the conductor end. The plastic collar ensures uniform insulation length and easier insertion into terminal blocks. Packed in a large quantity, the set reduces interruptions for replenishment and supports repetitive crimping work with consistent results.

Suitable for

• Termination of single-strand and tinned stranded conductors with a cross-section of 1.0 mm² (AWG 18)
• Crimping for control cabinets and distribution panels
• Wiring harnesses and industrial electrical assemblies
• Applications requiring insulated ferrules for secure screw or spring-clamp connections

When it may not be suitable

These ferrules are intended specifically for conductors of 1.0 mm² (AWG 18); they are not suitable for significantly larger or smaller conductor cross-sections. For high-temperature environments or applications requiring specialized insulation materials, polypropylene-insulated ferrules may not meet the necessary thermal or chemical resistance specifications.

Key specifications

• Conductor cross-section: 1.0 mm² (AWG 18)
• Conductor material: copper core
• Insulation material: polypropylene (PP) plastic collar
• Ferrule length: 8 mm
• Pack quantity: 4000 pieces
• Intended use: insulated ferrule for crimp termination

How to use

Strip the conductor to the appropriate length, slide the ferrule over the conductor end until the wire strands are fully enclosed, and crimp the ferrule using a matching crimping tool designed for insulated ferrules of this cross-section. After crimping, inspect the connection to ensure the conductor is securely held and the insulation collar aligns with the terminal entry. Insert the crimped ferrule into the terminal and tighten or engage the clamp according to the terminal manufacturer's instructions.

What to consider before purchase

• Verify conductor cross-section compatibility (1.0 mm² / AWG 18).
• Confirm that polypropylene insulation is acceptable for your temperature and chemical exposure conditions.
• Ensure you have a compatible crimping tool for insulated ferrules of this size.
• Consider storage and handling needs for a large 4000-piece pack.

Usage recommendations

For consistent, safe terminations use a calibrated crimping tool sized for 1.0 mm² insulated ferrules and follow regular inspection routines; avoid using these ferrules on conductors outside the specified cross-section or in environments exceeding PP insulation limits.