The Principle Of The Connector Nose

After the wire is inserted into the crimping sleeve of the connector lug, high pressure is applied using specialized crimping pliers, causing simultaneous plastic deformation of the copper (or aluminum) conductor and the inner wall of the connector lug. During this process, the multiple strands of the wire are compressed and interlocked, and the metal wall of the connector lug undergoes a "cold flow," forming a tight metal-to-metal contact surface.

This connection is not a simple "clamping," but rather uses pressure to create numerous microscopic contact points at the contact interface, and even a localized "cold welding effect" between the metals, significantly reducing contact resistance and improving conductivity stability. Simultaneously, the crimped structure has strong tensile strength, preventing the wire from loosening under vibration or tension.

The core principle of the connector lug can be summarized as: using specialized tools to generate controllable compressive force, causing permanent plastic deformation of the conductor and terminal, thereby forming a highly reliable, low-resistance, vibration-resistant electrical connection. Its core function is to achieve a conductive connection between the cable end and equipment (such as terminals, busbars), reducing contact resistance (typically required to be ≤5μΩ) through crimping and screw fixing, ensuring a secure and safe connection. According to national wiring standards, when connecting general conductors to terminals, the cable ends must use corresponding terminal connections; for multi-strand copper wires larger than 4mm², connector lugs must be installed before connection. It is a commonly used basic material in construction, power equipment, and electrical connections.