An apparatus for sectioning the phase conductors (L1, L2, L3) of a multi-phase electric power distribution network comprising a plurality of disconnectors (1, 2, 3), each disconnector being operatively associated to a related phase conductor and comprising switching means for sectioning the related phase conductor and a control unit that is capable of controlling said switching means and is capable of wireless communicating with other remote devices; characterised in that the control units of said disconnectors (1, 2, 3): - execute a normal-condition procedure, if the control unit of each disconnector (1, 2, 3) determines the occurrence of normal conditions for said power distribution network, during said normal-condition procedure the control unit of each disconnector (1, 2, 3) switching in turn between a transmission mode, in which said control unit broadcasts first data packages (DP 1) related to its operating conditions and/or the operating conditions of the power distribution network, and a turn-off mode, in which said control unit does not transmit or receive data packages from the control units of the other disconnectors; - execute a non-sectioning procedure, if the control unit of one disconnector determines the occurrence of a fault event and the occurrence of non-sectioning conditions for said power distribution network, during said non-sectioning procedure the control unit of each disconnector (1, 2, 3) switching in turn between a transmission mode, in which said control unit broadcasts second data packages (DP 2) related to its operating conditions and/or the operating conditions of the power distribution network, and a receiving mode, in which said control unit waits for receiving the second data packages (DP 2) broadcasted by the control units of the other disconnectors; - execute a sectioning procedure, if the control unit of one disconnector determines the occurrence of a fault event and the occurrence of sectioning conditions for said power distribution network, during said sectioning procedure the control unit that has determined the occurrence of said fault event coordinating the control units of the other disconnectors (1, 3), so that the control units of said disconnectors (1, 2, 3) synchronously command the sectioning of the phase conductors (L1, L2, L3) of said power distribution network at a predetermined intervention time. - execute a normal-condition procedure, if the control unit of each disconnector (1, 2, 3) determines the occurrence of normal conditions for said power distribution network, during said normal-condition procedure the control unit of each disconnector (1, 2, 3) switching in turn between a transmission mode, in which said control unit broadcasts first data packages (DP 1) related to its operating conditions and/or the operating conditions of the power distribution network, and a turn-off mode, in which said control unit does not transmit or receive data packages from the control units of the other disconnectors; - execute a non-sectioning procedure, if the control unit of one disconnector determines the occurrence of a fault event and the occurrence of non-sectioning conditions for said power distribution network, during said non-sectioning procedure the control unit of each disconnector (1, 2, 3) switching in turn between a transmission mode, in which said control unit broadcasts second data packages (DP 2) related to its operating conditions and/or the operating conditions of the power distribution network, and a receiving mode, in which said control unit waits for receiving the second data packages (DP 2) broadcasted by the control units of the other disconnectors; - execute a sectioning procedure, if the control unit of one disconnector determines the occurrence of a fault event and the occurrence of sectioning conditions for said power distribution network, during said sectioning procedure the control unit that has determined the occurrence of said fault event coordinating the control units of the other disconnectors (1, 3), so that the control units of said disconnectors (1, 2, 3) synchronously command the sectioning of the phase conductors (L1, L2, L3) of said power distribution network at a predetermined intervention time.