Phoenix Contact SMKDSN Series - Gap and Catch Mechanism added Phoenix Contact is changing bottom plate as shown on the pictures for the SMKDSN terminal blocks. They will get additional gaps on the underside, as well as an optimized catch mechanism on the face of the terminal block. Dimensions and technical data remain the same. During transition of the changes, both versions of this product may be supplied depending on inventory. Please contact a Mouser Technical Sales Representative for further information. 5-0813-25