Method for operating a power distributor

A method for operating a power distributor having a circuit breaker, which is provided to equip the power distributor, the circuit breaker comprising:

• a first controller;
• and
• a plurality of connected connection modules, each of the plurality of connected connection modules comprising a base resistor which form a resistor chain connected in series, which is supplied by a DC power source of the first controller and is guided against a reference potential,
• wherein each of the plurality of connected connection modules has a supply connector and a bus connector of a common bus system, which is signal-connected with the first controller, and which has a second controller for detecting an electrical voltage dropping at an associated base resistor, and which comprises a switch element operated by the second controller, which is adapted to be connected between a side of the associated base resistor facing away from the first controller and the reference potential, and which is adapted to be signal-connected to an associated bus connector and energized via the supply connector, and comprising:
• ensuring that the switch element of each circuit breaker is closed when the circuit breaker is not associated with a specific address;
• feeding a query via the first controller into the common bus system;
• and
• feeding, via the second controller, a response into the common bus system when the electrical voltage drops over the associated base resistor.