Crimp ferrule Erko TA 25 x 21 mm 50 pcs – insulated cable end sleeve

Erko TA 25 x 21 mm crimp ferrules, pack of 50, are insulated cable end sleeves designed to terminate stranded conductors cleanly and reliably. These ferrules increase the contact area of the conductor, reduce stray strands, and provide a consistent interface for screw terminals and terminal blocks. The insulated collar offers electrical insulation and strain relief at the termination point, making these ferrules suitable for use in control panels, distribution boards and general wiring where vibration-resistant, standardized connections are required.

Advantages

These insulated cable end sleeves deliver a secure mechanical and electrical connection by containing and compressing stranded conductors within a metal tube while the insulated collar prevents short circuits and improves handling during installation. The consistent shape and size of each ferrule permit uniform crimping quality across multiple terminations and simplify maintenance and troubleshooting by presenting a clear, neat termination. Pack quantity of 50 ensures availability for small to medium installation tasks.

Suitable for

• Terminating stranded copper conductors in electrical panels and junction boxes
• Connections to screw terminals and terminal blocks
• Industrial control cabinets and distribution boards subject to vibration
• Electrical installations requiring standardized, reliable terminations

Key specifications

• Ferrule type: insulated crimp ferrule (cable end sleeve)
• Applicable conductor type: stranded copper conductors
• Ferrule dimensions: 25 x 21 mm (insulated collar and metal tube combined)
• Pack quantity: 50 pieces
• Function: improves contact surface, prevents frayed strands, provides insulation and strain relief

How to use

Strip the conductor to the appropriate length for the ferrule, insert the stripped conductor fully into the metal tube so that all strands are contained, and position the insulated collar against the insulation. Use a suitable crimping tool sized for the ferrule dimensions to apply a single, firm crimp. After crimping verify the mechanical retention and that no strands protrude. Install the crimped ferrule into the terminal and secure the terminal screw to manufacturer-recommended torque values.

Usage recommendations

Choose a crimping tool compatible with insulated ferrules of this size to ensure reliable compression and electrical contact. Confirm conductor cross-section suitability for the 25 x 21 mm ferrule before use and follow local electrical codes and terminal manufacturer torque specifications when tightening connections.