A method for operating a power distributor, having a first controller, and having a plurality of connected connection modules, each having a base resistor, which form a resistor chain connected in series, which chain is supplied by means of a DC source of the first controller and is guided against a reference potential. Each connection module has a supply connector and a bus connector of a common bus system, which is signal-connected to the first controller. The connection modules are equipped with a circuit breaker, each having a second controller for detecting the electrical voltage dropping at the associated base resistor and a switch element operable by the respective second controller, which element is connected between the side of the associated base resistor facing away from the first controller and the reference potential, and which is signal-connected with the associated bus connector and energized by means of the supply connector.

A power distributor having a first controller and having a number of connection modules which are connected thereto and are intended to be mounted on a supporting rail. The connection module has a number of lateral coupling contacts for the electrical and/or signalling contact connection to at least one further connection module which is attached or can be attached to the particular connection module, wherein a base resistor is connected in each case between two coupling contacts inside the module in such a manner that the base resistors of the attached connection modules form a resistor chain which is connected in series. The connection modules are each equipped or can be equipped with an actuatable circuit breaker. The circuit breakers have a second controller inside the circuit breaker for recording a voltage dropped across the respectively associated base resistor.

A power distributor having a first controller and having a number of connection modules which are connected thereto and are intended to be mounted on a supporting rail. The connection module has a number of lateral coupling contacts for the electrical and/or signalling contact connection to at least one further connection module which is attached or can be attached to the particular connection module, wherein a base resistor is connected in each case between two coupling contacts inside the module in such a manner that the base resistors of the attached connection modules form a resistor chain which is connected in series. The connection modules are each equipped or can be equipped with an actuatable circuit breaker. The circuit breakers have a second controller inside the circuit breaker for recording a voltage dropped across the respectively associated base resistor.

A system for controlling an appliance enables electrical circuits to be wired up more quickly, and electrical circuits to be reconfigured more easily. The electrical control system including a central control unit; one or more switch units connected in series forming a loop, the loop including a first end and a second end, wherein the first end and the second end of the loop are connected to the central control unit; and one or more appliance controllers connected to a respective appliance and in communication with the central control unit; wherein one or more electrical parameters are measured at the first end of the loop, and the central control unit sends a control code associated with the one or more electrical parameters to the one or more appliance controllers.