Connection apparatus for connecting a multicore branch line to a ribbon cable, comprising: a connection apparatus housing which allows the ribbon cable to pass through; piercing contacts (42, 42') for making contact with the ribbon cable without stripping insulation, wherein the piercing contacts (42, 42') are arranged in the connection apparatus housing; a branch line bushing for the branch line to exit from the connection apparatus, wherein the branch line bushing is arranged on the connection apparatus housing; wherein the branch line bushing comprises a branch line bushing housing and a fuse receptacle, which is arranged in the said branch line bushing housing, for at least one fuse insert for fuse-protecting an associated core (41, 41') of the branch line, wherein the fuse receptacle is electrically connected to the piercing contacts via a connecting line (43, 43'), wherein the fuse receptacle forms an electrical isolation point for the at least one fuse-protected core of the branch line, whereby the core of the branch line situated on the other side of the isolation point can be electrically isolated from the ribbon cable by response of the fuse insert; wherein the branch line bushing housing can be opened and the at least one fuse insert can be replaced by opening the branch line bushing housing, without opening the connection apparatus housing, wherein the fuse receptacle comprises an insulating body which has at least one hollow space for receiving the at least one fuse insert and which is equipped with fuse contacts (16, 16') for making contact with the at least one fuse insert which is to be received in the hollow space, characterized in that the insulating body is of two-part design, with one part on one side and one part on the other side, and wherein the part of the insulating body on the other side can be removed from the part on this side solely by opening the branch line bushing housing, without opening the connection apparatus housing, wherein the hollow space for receiving the at least one fuse insert is then accessible and therefore the at least one fuse insert can be replaced, wherein the entire branch line can be removed from the connection apparatus owing to the ability to remove the part of the insulating body on the other side. a connection apparatus housing which allows the ribbon cable to pass through; piercing contacts (42, 42') for making contact with the ribbon cable without stripping insulation, wherein the piercing contacts (42, 42') are arranged in the connection apparatus housing; a branch line bushing for the branch line to exit from the connection apparatus, wherein the branch line bushing is arranged on the connection apparatus housing; wherein the branch line bushing comprises a branch line bushing housing and a fuse receptacle, which is arranged in the said branch line bushing housing, for at least one fuse insert for fuse-protecting an associated core (41, 41') of the branch line, wherein the fuse receptacle is electrically connected to the piercing contacts via a connecting line (43, 43'), wherein the fuse receptacle forms an electrical isolation point for the at least one fuse-protected core of the branch line, whereby the core of the branch line situated on the other side of the isolation point can be electrically isolated from the ribbon cable by response of the fuse insert; wherein the branch line bushing housing can be opened and the at least one fuse insert can be replaced by opening the branch line bushing housing, without opening the connection apparatus housing, wherein the fuse receptacle comprises an insulating body which has at least one hollow space for receiving the at least one fuse insert and which is equipped with fuse contacts (16, 16') for making contact with the at least one fuse insert which is to be received in the hollow space, characterized in that the insulating body is of two-part design, with one part on one side and one part on the other side, and wherein the part of the insulating body on the other side can be removed from the part on this side solely by opening the branch line bushing housing, without opening the connection apparatus housing, wherein the hollow space for receiving the at least one fuse insert is then accessible and therefore the at least one fuse insert can be replaced, wherein the entire branch line can be removed from the connection apparatus owing to the ability to remove the part of the insulating body on the other side.