Tarnishing of Silver coating

The aim of this document is to provide information to all stakeholders of Low and Medium Voltage Offers on tarnishing phenomenon for silver plated parts. Tarnishing is a natural phenomenon which occurs to silver metal when it reacts with specific pollutants. Silver tarnishing is not detrimental to contact joints resistance if the assembling is carried out according to relevant standards. Schneider Electric provides extra measures and care to protect all silver-plated parts from tarnishing in terms of aesthetical and functional requirements