Rittal AS 4051.546 ferrule AWG 18 (1.0 mm²) x 10 mm, copper/polypropylene, pack 4000

Rittal AS 4051.546 ferrules are insulated wire end sleeves designed for AWG 18 / 1.0 mm² conductors. Each ferrule features a 10 mm long copper crimp barrel with a red polypropylene insulation collar. Supplied as a bulk pack of 4000 pieces, these ferrules are intended for reliable termination of stranded conductors used in control cabinets, distribution panels and general electrical installations.

Advantages

The combination of a copper sleeve and polypropylene insulation provides good electrical contact, corrosion resistance in typical indoor environments and clear insulation colour coding for quick identification. The 10 mm barrel length accommodates multiple strand counts and improves mechanical stability when crimped. Supplied in a large pack of 4000 pieces, the set supports repetitive assembly work and reduces the need for frequent reordering.

Suitable for

• Crimp termination of stranded conductors AWG 18 / 1.0 mm²
• Wire harnesses and terminal blocks in control cabinets and switchgear
• Panel building, machine wiring and industrial electrical maintenance
• Applications where insulated ferrules prevent strand fraying and ensure stable screw terminal contact

When it may not be suitable

These ferrules are intended for AWG 18 / 1.0 mm² conductors; they are not suitable for significantly larger or smaller conductor cross-sections. The polypropylene insulation is designed for standard indoor electrical environments and may not be appropriate for high-temperature, chemically aggressive or outdoor installations without additional protection.

Key specifications

• Conductor cross-section: 1.0 mm² (AWG 18)
• Barrel length: 10 mm
• Barrel material: copper
• Insulation material: polypropylene (PP)
• Insulation colour: red
• Pack quantity: 4000 pieces

How to use

Strip the conductor to the appropriate length, insert the stripped strands fully into the copper barrel and crimp using a compatible ferrule crimping tool sized for 1.0 mm² ferrules. After crimping, check that the insulation collar sits flush against the conductor insulation and that the crimp is mechanically secure. Insert the terminated ferrule into terminal blocks or screw terminals and tighten the connection according to the terminal manufacturer's torque specifications.

What to consider before purchase

• Confirm conductor cross-section (1.0 mm² / AWG 18) matches your wire
• Ensure crimping tool dies or jaws are suitable for ferrules of this size
• Consider insulation material and colour for your application and identification needs
• Buy in bulk accordingly — pack contains 4000 pieces

Usage recommendations

Use a dedicated ferrule crimping tool matched to 1.0 mm² ferrules for consistent, reliable crimps. Verify connections visually and by gentle pull test after crimping. Store the pack in a dry, dust-free area to maintain part cleanliness prior to use.