Wieland selos ivb wkwkn insulated cross connectors with screws wieland z728122270 this selos 12 pole insulated cross connector ivb wk 4 12 from wieland has been designed with m3 screwable mounting for connections that are long lasting and maintenance free equipped with a copper current bar ensuring low contact resistance along with 12 bridged clamps and 6mm spacing compatible with the following din rail terminal block seloswk 4ufeed through wieland z728122270 selos ivb wk 4 12