Mechanical and Electrical Reliability

A plug connection must ensure uniform distribution of the current flow. This requires that a moderate thickness of material is present in the crimp area of the contact while at the same time the thickest possible metal thickness is present in the contact area. This requirement is met by the double-spring principle.

Pivots of the SKEDD contact 

In the inserted state the contact is designed such that the fork is exactly closed. This means, mechanically, that the behaviour of the spring, i.e. its stiffness, suddenly changes.

Now the spring is significantly more robust in protecting against shock and vibration movements. This is important in turn because it is important to ensure that no interruption of contact occurs due to mechanical stress while in the inserted state.