This presentation was part of our virtual conference (26-29 Apr): WE meet @ Digital Days 2021 Wonder why a switch failed under obviously “normal” circumstances ? Let’s point out some of the major components of a switch that influence the quality aspects. Points like contact plating, conductor materials, mechanical parts and plastic components will be observed in terms of their function, behavior and reliability, as well as the “How-to-Test” quality when it’s about standardization and compliance.