Wieland selos ivb wkwkn insulated cross connectors with screws wieland z728112270 this selos 2 pole insulated cross connector ivb wk 4 2 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 2 bridged clamps and 6mm spacing compatible with the following din rail terminal block seloswk 4ufeed through wieland z728112270 selos ivb wk 4 2 cross