System of tracks with three separated circuits and power supply accessories for designing of different spatial configurations. On the inside, there are four copper conductors (three phases L1, L2, L3 and neutral N), each isolated from the body of the track by a PVC profile. The maximum voltage between each phase and neutral is 250V. The maximum current for all the tree circuits (L1+L2+L3) is 16A. The maximum power, considered at the nominal entry voltage, is 3,7 kW.