The invention relates to a conductor line (6) for supplying at least one electric load which can be moved on the conductor line in the longitudinal direction (L) of the conductor line, comprising at least one conductor strand (15; 30; 38; 45) which runs in the longitudinal direction (L) and which comprises an
electrically conductive profiled conductor section (16; 31; 39; 46) for contacting a
sliding contact (22; 23; 33; 43; 56) of the load and at least one
signal transmission device (19; 35; 40; 47) which runs in the longitudinal direction (L). The invention also relates to a
current collector (3) for the load with at least one
sliding contact (22; 23; 33; 43; 56) for contacting the profiled conductor section (16; 31; 39; 46) of the conductor strand (15; 30; 38; 45) of the conductor line (6) and with at least one antenna (21; 37; 44; 49) for transmitting data to a conductor line (6)
signal transmission device (19; 35; 40; 47), which moves in the longitudinal direction (L). The invention also relates to a conductor line
system. The aim of the invention is to allow a compact and material-saving design as well as a good fault-tolerant transmission. This is achieved by a conductor line (6) in which the
signal transmission device (19; 35; 40; 47) and the profiled conductor section (16; 31; 39; 46) are designed as one component, by a
current collector (3) in which the
sliding contact (22; 23; 33; 43; 56) and the antenna (21; 37; 24; 49) are designed as one component, and by a conductor line
system comprising such a conductor line (6) and such a
current collector (3).