Explanation:
The Wieland gesis® CLASSIC installation connector system consists of GST® connectors, GST® device connectors, GST® distribution blocks and pre-assembled variants with different cable cross-sections and different connection techniques. All GST® products are certified in accordance with the harmonised standard EN IEC 61535 and are marketed by us for the establishment of a permanently pluggable connection in electrical installation systems.
EN IEC 61535 is a product standard and only regulates the requirements for product design; as a product standard, EN IEC 61535 does not contain any specifications for the design of connectors; i.e. unlike design standards (e.g. for the manufacture of earth contact connectors), codings and mating face can be freely selected by the manufacturers and can also be further developed within an installation connector family. This design freedom means that mechanical pluggability alone does not establish compatibility between connectors from different manufacturers.
Accordingly, the product standard EN IEC 61535 stipulates that only installation connectors from the same manufacturer should be used for installations, as this is the only way to ensure safe power transmission over a long period of time.