Two Main Reasons For Overheating In Heavy-duty Connectors

Generally speaking, there are two main problems with heavy duty electric cable connectors overheating. First, heavy duty automotive electrical connectors lost its normal contact force, which may be caused by the thermal expansion effect between the spring material of heavy duty 12v connectors and the plastic shell. The lower spring material reduces the strength of heavy duty 12 volt connectors, which is caused by stress relaxation in the spring material.

The second problem is the formation of an insulating film on the surface of the 12v heavy duty connector contact material. This typically results in a complete conductive barrier forming at the separable interface of the heavy duty crimp connectors, as non-precious metals diffuse onto the contact surface and subsequent oxidation can form a thin film due to degassing of the plastic casing or other adjacent volatile materials.

A common effect of thermal failure in heavy duty waterproof electrical connectors is that increased contact resistance reduces transmission performance, while decreased contact force leads to a reduction in the actual contact area.