Electrical Characteristics Of Copper Terminal Blocks For Shared Potential And Shared Potential Across Multiple Circuits.

copper terminal block is made of pure copper and has extremely low resistivity. When multiple circuits are connected to the same copper distribution block via bolts, these contact points actually form an equipotential body. Since copper's conductivity is second only to silver, the voltage drop across it is minimal, resulting in all connection points within the entire busbar copper terminal strip maintaining essentially the same potential.

The common U, V, W three-phase busbar configuration in distribution cabinets fully embodies this principle. Each phase busbar is connected to several switch contacts or electrical devices, and these dispersed connection points maintain the same busbar potential. Current enters the busbar through any contact point and exits through others, maintaining a balanced potential throughout the process.

It is this inherent equipotential characteristic that allows engineering designs to maintain the electrical connection stability of multiple circuits without the need for additional specialized voltage equalization measures. The width, thickness, and copper properties of the busbar collectively ensure this capability.