A DC solid state power controller, SSPC, comprising a plurality of power channels, each power channel comprising a MOSFET and a MOSFET body diode , the SSPC having a transient protection circuit, the transient protection circuit comprising: a shared transient voltage suppressor communicatively coupled to ground; and a shared protection line communicatively coupled to the shared transient voltage suppressor; characterized in that : the shared protection line is configured to be communicatively coupled to and shared by the plurality of power channels; wherein the plurality of power channels are configured to be communicatively coupled to a shared feed line (FEED BUS LINE); wherein each of the plurality of power channels is configured to be communicatively coupled to a non-shared load line; wherein, when the shared protection line is communicatively coupled to and shared by the plurality of power channels, positive pulses above a threshold originated from the non-shared load line of any one of the plurality of power channels are dissipated through the any one of the plurality of power channels to the shared feed line; wherein, when the shared protection line is communicatively coupled to and shared by the plurality of power channels, negative pulses above a threshold originated from the non-shared load line of any one of the plurality of power channels are dissipated through the shared protection line and the shared transient voltage suppressor. a shared transient voltage suppressor communicatively coupled to ground; and a shared protection line communicatively coupled to the shared transient voltage suppressor; characterized in that : the shared protection line is configured to be communicatively coupled to and shared by the plurality of power channels; wherein the plurality of power channels are configured to be communicatively coupled to a shared feed line (FEED BUS LINE); wherein each of the plurality of power channels is configured to be communicatively coupled to a non-shared load line; wherein, when the shared protection line is communicatively coupled to and shared by the plurality of power channels, positive pulses above a threshold originated from the non-shared load line of any one of the plurality of power channels are dissipated through the any one of the plurality of power channels to the shared feed line; wherein, when the shared protection line is communicatively coupled to and shared by the plurality of power channels, negative pulses above a threshold originated from the non-shared load line of any one of the plurality of power channels are dissipated through the shared protection line and the shared transient voltage suppressor. the shared protection line is configured to be communicatively coupled to and shared by the plurality of power channels; wherein the plurality of power channels are configured to be communicatively coupled to a shared feed line (FEED BUS LINE); wherein each of the plurality of power channels is configured to be communicatively coupled to a non-shared load line; wherein, when the shared protection line is communicatively coupled to and shared by the plurality of power channels, positive pulses above a threshold originated from the non-shared load line of any one of the plurality of power channels are dissipated through the any one of the plurality of power channels to the shared feed line; wherein, when the shared protection line is communicatively coupled to and shared by the plurality of power channels, negative pulses above a threshold originated from the non-shared load line of any one of the plurality of power channels are dissipated through the shared protection line and the shared transient voltage suppressor. <EOS>