Wieland fasisselos ivb wkf insulated cross connectors 254 wieland z726115270 this fasisselos 5 pole insulated cross connector ivb wkf 4 5 from wieland is equipped with a copper current bar ensuring low contact resistance while the steel spring guarantees strength durability and long term stability the individual poles are easy to remove allowing the circuits to be identified easily compatible with the following din rail terminal blocks seloswt 4 feed through wt 4 d12 duo feed t