Cord End Ferrule Terminals

Cord end ferrule terminals (also called bootlace ferrules) are used to terminate stranded wire before inserting into screw terminal blocks, spring terminals, or push-in connectors. They prevent wire strand fraying, ensure all strands make contact, and create a more reliable electrical connection. Common applications include control panels, circuit breakers, PLCs, motor controllers, and industrial automation equipment.

Insulated ferrules feature a plastic collar that provides finger protection, strain relief, and colour coding for easy wire size identification. They're ideal for applications where accidental contact is possible or where quick visual wire identification is needed.

Uninsulated ferrules are bare copper tubes, best suited for applications where space is limited or where the terminal block provides adequate protection. They offer maximum conductivity and are often preferred in high-current applications.

German ferrules (DIN 46228) feature a funnel-shaped entry for easier wire insertion and typically have a shorter overall length.

French ferrules (NF C 63-023) have a straight barrel design and are generally slightly longer. Both meet international standards and provide equivalent electrical performance. The choice often depends on manufacturer preference, available crimping tools, or specific industry requirements.

Match the ferrule size to your wire's cross-sectional area (CSA), measured in mm².

Key points:

• The ferrule ID must match your wire size exactly (e.g., 1.5mm² ferrule for 1.5mm² wire)
• For dual-entry ferrules, both wires must be the same size
• Check your terminal block specifications for maximum wire size

You'll need a specialized ferrule crimping tool (not standard wire crimpers). Professional options include:

• Ratchet crimping tools - Ensure complete crimps with consistent pressure
• Automatic wire strippers with crimper - Combined stripping and crimping
• Pneumatic/electric crimpers - For high-volume production

The crimping tool must match your ferrule size range. Most professional tools accommodate 0.25mm² to 16mm² ferrules with interchangeable dies.

No. Dual-entry (twin wire) ferrule terminals are designed for two wires of the same cross-sectional area. Using different wire sizes will result in poor crimping, unreliable connections, and potential safety hazards. If you need to connect different wire sizes, use separate single-wire ferrules or a junction terminal block.

While not universally mandatory, many electrical standards and equipment manufacturers strongly recommend or require ferrules for stranded wire connections. The IEC 60204-1 standard for industrial machinery and BS 7671 (UK Wiring Regulations) recommend ferrules for stranded conductors in screw terminals. Always check your specific application requirements and manufacturer guidelines.