Why Do Copper Terminal Blocks Have Lower Contact Resistance Than Most Other Materials In Electrical Connections?

Due to its material properties and manufacturing process, copper terminal block exhibits low contact resistance at circuit connection points. This characteristic is directly derived from the conductivity and interface transport behavior of copper itself. Compared to common metals, pure copper and high-purity copper alloys have lower resistivity (the material has the least resistance to current), which means that under certain cross-sectional area conditions, copper distribution block has better conductivity than most other metals.

copper terminal strip can use high-quality copper materials and can maintain the smoothness of the contact surface through precision forming and surface treatment during the manufacturing stage, so that the contact point density is higher than that of conventionally treated materials and the interface resistance is reduced. Furthermore, copper's mechanical ductility and elasticity provide stable contact pressure and a larger actual contact area during crimping or fastening, which positively contributes to reducing interfacial resistance.