A power distribution network comprising: a power transmission line; a first solid state switch module configured to provide differential protection, the first solid state switch module electrically coupled to the power transmission line at a first location, wherein the first solid state switch module is configured to determine a first current value in the power transmission line at the first location; a second solid state switch module configured to provide differential protection connected to the power transmission line at a second location, the second solid state switch module being identical to the first solid state switch module and being arranged generally downstream from the first solid state switch module, wherein the second solid state switch module is configured to determine a second current value of the power transmission line at the second location; circuitry coupling the second solid state switch module and the first solid state switch module to transfer a current value to the second solid state switch module; and a third solid state switch module identical to the first solid state switch module and the second solid state switch module, electrically coupled to the power transmission line at a third location, and arranged such that the first solid state switch module and the third solid state switch module as parallel sources jointly provide electrical power to the second solid state switch module, wherein the third solid state switch module is configured to determine a third current value in the power transmission line ower at the third location, wherein the first solid state switch module is configured to sum the first current and the third current and to transfer the sum to the second solid state switch module through the coupling circuitry; and wherein the second solid state switch module is configured to compare the second current with the sum of the first current and the third current to determine a difference, the second solid state switch module being configured to transmit a trip signal to the first solid state switch module and to the third solid state switch module in response to the difference being greater than a selected threshold, the trip signal causing both the first solid state switch module and the third solid state switch module to open and disrupt transmission of electricity therethrough. a power transmission line; a first solid state switch module configured to provide differential protection, the first solid state switch module electrically coupled to the power transmission line at a first location, wherein the first solid state switch module is configured to determine a first current value in the power transmission line at the first location; a second solid state switch module configured to provide differential protection connected to the power transmission line at a second location, the second solid state switch module being identical to the first solid state switch module and being arranged generally downstream from the first solid state switch module, wherein the second solid state switch module is configured to determine a second current value of the power transmission line at the second location; circuitry coupling the second solid state switch module and the first solid state switch module to transfer a current value to the second solid state switch module; and a third solid state switch module identical to the first solid state switch module and the second solid state switch module, electrically coupled to the power transmission line at a third location, and arranged such that the first solid state switch module and the third solid state switch module as parallel sources jointly provide electrical power to the second solid state switch module, wherein the third solid state switch module is configured to determine a third current value in the power transmission line ower at the third location, wherein the first solid state switch module is configured to sum the first current and the third current and to transfer the sum to the second solid state switch module through the coupling circuitry; and wherein the second solid state switch module is configured to compare the second current with the sum of the first current and the third current to determine a difference, the second solid state switch module being configured to transmit a trip signal to the first solid state switch module and to the third solid state switch module in response to the difference being greater than a selected threshold, the trip signal causing both the first solid state switch module and the third solid state switch module to open and disrupt transmission of electricity therethrough.