Why Are Push-button Terminal Connectors Typically Made Of Highly Conductive Metals Or Alloys?

The push-button design of the push wire terminal block terminal requires direct current transfer through its metal contacts during operation, and the resistivity of the metal significantly affects current loss and heat generation. Copper and copper alloys offer a good balance between electrical conductivity and machinability, and these materials are repeatedly used in many push in terminal block wire connector applications.

Plastic or other insulating materials are commonly used for the housing and structural components of the push in wire terminal block, while the actual electrical contact parts are made of metal to provide a stable current transmission path. The choice of conductive metal significantly affects contact surface resistance, current carrying capacity, and contact life. Copper, copper alloys, and materials with plating treatments, when necessary, are all used in the terminal design and manufacturing process.