Consequences Of Copper Terminal Block Cracks

In industrial power distribution cabinets, control systems, and complex electrical devices, copper terminal block serves as a conductive connecting element, responsible for current distribution and line connection. Cracks in copper distribution block may appear minor on the surface, but this loss of material integrity can have a significant impact on system stability and service life in real-world operating environments.

Cracks in the copper terminal strip component alter the internal structure of the conductor, disrupting the current conduction path through the cracked area. The local impedance at the crack is higher than the surrounding area, leading to increased heat generation over time. This heat effect is caused by changes in local contact resistance when current passes through the damaged copper. Once the temperature rises beyond the material's tolerance range, the strength of the copper metal decreases, potentially causing contact pressure attenuation, electrical contact deformation, or even ablation.