Why Does Overheating Of Copper Terminal Blocks Cause Melting And Sparking?

copper terminal block plays a key role in conductivity and diversion in the electrical system. However, once the material of copper distribution block melts due to heat at the local contact point, the conductivity will drop rapidly, and the material of copper terminal strip will quickly vaporize, causing the resistance between the contacts to rise sharply, resulting in serious overheating and even electric sparks.