Press-type Terminal Connectors Are Typically Made Of Corrosion-resistant Metals Or Alloys.

Copper and its alloys are preferred materials for contacts due to their excellent electrical conductivity and mechanical strength. In some push connector block designs, these metal substrates are tin-plated or nickel-plated to slow down surface oxidation and improve the chemical stability of the contact surfaces.

The internal spring elements or clamping mechanisms of push wire terminal block contacts typically use elastic metal alloys. These materials combine elastic restoring force with durability, making them suitable for repeated wiring operations over extended periods. Surface plating is also part of the material configuration and helps extend the contact life.

Insulating components rely on high-performance engineering plastics, such as polymer composites, which provide electrical isolation and structural support, ensuring a stable layout of the metal conductors within the terminal block. Although insulators are not conductive components, their material properties directly affect the overall mechanical stability and environmental adaptability of the product.