Abstract: A connection arrangement for a rack housing with a plurality of load zones includes at least one internal connection device each having at least one phase conductor and one neutral conductor for each of the plurality of load zones, and a distributor device that electrically couples the internal connection devices with at least two external lines that are electrically independent from each other for connection to different phases and/or different energy sources, wherein each of the internal connection devices is coupled directly to the distributor device independent of the other internal connection devices, and the distributor device for distribution of a voltage of the at least two external lines to the individual load zones of the rack housing is arranged so that a voltage failure of an individual external line does not lead to failure of all of the load zones.