Excessive Burrs On Copper Terminal Blocks Can Lead To Abnormal Heat Generation.

In electrical connection components, if there are burrs on the surface of the copper terminal block machined part, an uneven contact interface will be generated. As the surface roughness increases, the resistance of the current flowing through the burrs during the power-on process is higher, resulting in local heat accumulation. Over long-term operation, this heat buildup raises the temperature of the connection points, accelerating material aging and performance degradation.

The formation of burrs is often related to the machining process and mold stability. When the stamping die is worn or the set dimensional deviation exceeds the tolerance, the surface processed by copper distribution block is more prone to burrs. These tiny protrusions can cause incomplete contact or micro-gaps between the wires and terminals during assembly. Uneven current distribution occurs in areas of incomplete conductor contact, and when high-density current flows through these areas, the local temperature rises significantly.

Abnormal heat can affect the short-term performance of copper terminal strip and may also affect the lifespan of the module during long-term use.