Anordnung mit einem Schaltgerät und einer Auswerteeinrichtung zur Ermittlung der Restlebensdauer

摘要

The invention relates to a system with a switching device that comprises a housing, a contact system (4) located therein with a contact piece support (4c) and a contact piece (4d) mounted thereon, with means (8) for determining an equivalent criterion for determining the remaining service life of the contact piece (4d), and with an evaluation device for evaluating said equivalent criterion. According to the invention, the means (8) are configured as to produce and record structure-borne sound waves.