System (2, 38, 70) for the establishment of an electrical connection (12, 12', 20, 20', 20", 40, 95), comprising: - an aluminium flat conductor (4, 22, 42, 72, 132) configured as a motor vehicle energy conductor, in particular a motor vehicle battery conductor, and - an electrical connecting element (8, 8', 28, 46, 50, 76, 76', 76", 76''', 134, 136, 138, 140) which is designed to be connected to the aluminium flat conductor (4, 22, 42, 72, 132) such that an electrical connection (12, 12', 20, 20', 20", 40, 95) is established between the aluminium flat conductor (4, 22, 42, 72, 132) and the connecting element (8, 8', 28, 46, 50, 76, 76', 76", 76'''), - wherein the connecting element (8, 8', 28, 46, 50, 76, 76', 76", 76''', 134, 136, 138, 140) comprises a metal clip (10, 10', 30, 52, 78, 78', 78") which is adapted to be laterally mounted onto the aluminium flat conductor (4, 22, 42, 72, 132) such that an electrical connection is established between the aluminium flat conductor (4, 22, 42, 72, 132) and the metal clip (10, 10', 30, 52, 78, 78', 78"), and - wherein the connecting element (16, 16', 57) comprises a housing in which a contacting space is provided, characterised - in that the aluminium flat conductor (4, 22, 42) can be guided through the housing in such a way that a section of the aluminium flat conductor (4, 22, 42) runs through the contacting space, - in that the metal clip (10, 10', 30, 52) is arranged in such a way that it can be mounted laterally onto that section of the aluminium flat conductor (4, 22, 42) which runs through the contacting space, and - in that the housing is the housing of a power distributor having a plurality of electrical terminals for connecting electrical components, wherein the electrical terminals are electrically connectable to the aluminium flat conductor via the metal clip, or in that the housing is the housing of a fuse box, wherein the fuse box comprises one or more fuses with which one or more electrical terminals can be protected. - an aluminium flat conductor (4, 22, 42, 72, 132) configured as a motor vehicle energy conductor, in particular a motor vehicle battery conductor, and - an electrical connecting element (8, 8', 28, 46, 50, 76, 76', 76", 76''', 134, 136, 138, 140) which is designed to be connected to the aluminium flat conductor (4, 22, 42, 72, 132) such that an electrical connection (12, 12', 20, 20', 20", 40, 95) is established between the aluminium flat conductor (4, 22, 42, 72, 132) and the connecting element (8, 8', 28, 46, 50, 76, 76', 76", 76'''), - wherein the connecting element (8, 8', 28, 46, 50, 76, 76', 76", 76''', 134, 136, 138, 140) comprises a metal clip (10, 10', 30, 52, 78, 78', 78") which is adapted to be laterally mounted onto the aluminium flat conductor (4, 22, 42, 72, 132) such that an electrical connection is established between the aluminium flat conductor (4, 22, 42, 72, 132) and the metal clip (10, 10', 30, 52, 78, 78', 78"), and - wherein the connecting element (16, 16', 57) comprises a housing in which a contacting space is provided, characterised - in that the aluminium flat conductor (4, 22, 42) can be guided through the housing in such a way that a section of the aluminium flat conductor (4, 22, 42) runs through the contacting space, - in that the metal clip (10, 10', 30, 52) is arranged in such a way that it can be mounted laterally onto that section of the aluminium flat conductor (4, 22, 42) which runs through the contacting space, and - in that the housing is the housing of a power distributor having a plurality of electrical terminals for connecting electrical components, wherein the electrical terminals are electrically connectable to the aluminium flat conductor via the metal clip, or in that the housing is the housing of a fuse box, wherein the fuse box comprises one or more fuses with which one or more electrical terminals can be protected.