Material Selection For Push-button Terminal Connectors

The internal conductor portion of push in terminal block wire connector is typically made of highly conductive metals such as copper alloys. These materials offer a reasonable balance between conductivity and mechanical elasticity, and can withstand repeated insertions and removals as well as common current-carrying requirements. The external insulating shell of push in wire terminal block is often made of thermoplastic resin or engineering plastics. These materials possess good electrical insulation and processability, while also meeting safety regulations regarding flame retardancy or heat resistance.

The material selection for push fit terminal block connector requires a trade-off between different performance indicators. High-performance metals or surface-plated materials such as nickel and silver perform better in improving the contact stability and oxidation resistance of push connector block, but their cost is relatively high; while engineering plastics are less expensive, they may experience performance degradation under high temperatures or long-term load conditions.