Power distributor

A power distributor comprising:

• a first controller;
• and
• at least two connection modules connected to the first controller and being adapted to be mounted on a supporting rail;
• wherein the at least two connection modules are attachable to each other and each comprise coupling contacts for an electrical and/or signaling contact connection,
• wherein inside each of the at least two connection modules, a base resistor is provided between two of the coupling contacts and wherein the at least two connection modules are lined up, such that the base resistor of each of the at least two connection modules are connected together to form a series-connected resistor chain,
• wherein the at least two connection modules are each equipped with an actuatable circuit breaker,
• wherein the circuit breaker of each of the at least two connection modules each have a breaker-internal second controller for recording a voltage dropped at the respective, associated base resistor and a switching element that is actuated by the second controller, the switching element being connected between the respective, associated base resistor and a ground connection of the respective, associated connection module,
• wherein the second controllers are configured to transmit a controller signal to the first controller on the basis of the recorded voltage, the controller signal corresponding to the voltage dropped at the respective, associated base resistor, and wherein the first controller is configured to determine a total resistance value of the resistor chain,
• wherein the first controller includes a DC power source for supply of the resistor chain,
• wherein the first controller is configured to determine, based on the total resistance value, a number value corresponding to a number of the at least two connection modules that are attached, and
• wherein, in the event of a galvanic interruption of the resistor chain, the first controller and the second controller of each of the at least two connection modules are configured to initiate a search process for determining the point of interruption.