Block contact KSA THAT 3424-0002-61290495-2012 produced by an enterprise the "Flexible system" to replace the Block contact KSA THAT 16.538.134–71 taken out of production at all enterprises of the former USSR. Products issued in 50-90 years, commonly installed on high-voltage substations in the post-Soviet space are to this day. Today require an urgent global replacement of all the old KSA for a new one.