Solid state power controller (SSPC) used as bus tie breaker in electrical power distribution systems

An electrical power distribution system comprising:

• a first source of electrical power connected to a first primary distribution panel (PDP);
• a second source of electrical power connected to a second PDP;
• an electrical load;
• a first solid state power controller (SSPC) to said first source of electrical power;
• a second SSPC connected to said second source of electrical power;
• and
• a cross-tie conductor connected between the first PDP and the second PDP,
• wherein the first SSPC and the second SSPC both include an algorithm that implements over-current protection.

A circuit for protecting an electrical power distribution system comprising:

• a first power distribution panel (PDP) connected to a first bus bar, the first bus bar connected to a first source of electrical power;
• a second PDP connected to a second bus bar, the second bus bar connected to a second source of electrical power;
• a cross-tie conductor connection the second PDP to the first PDP;
• a first solid state power controller (SSPC) receiving signals corresponding to a flow of current in the cross-tie conductor through the first PDP, the first SSPC receiving current information corresponding to a flow of current in the second PDP via a communication data bus;
• a second SSPC receiving signals corresponding to the flow of current in the cross-tie conductor through the second PDP, the second SSPC receiving current information corresponding to the flow of current in the first PDP via the communication bus;
• wherein the first SSPC and the second SSPC responds to a fault condition in the cross-tie conductor by interrupting the flow of electrical power between the first PDP and the second PDP,
• wherein the first SSPC and the second SSPC both include an algorithm that implements missing phase protection.