Electrical device for supplying power to power electrical units

An electrical device for supplying power to a plurality of power units, comprising a fixed support and a plurality of contactor blocks, in which:

• the fixed support comprises input terminals, for receiving a polyphase power current, and a distribution circuit that is configured to distribute the power current to power lines that each comprise a plurality of single-phase supply lines, the fixed support comprising a number of power lines that is the same as the number of contactor blocks of the electrical device, and each power line comprising a number of supply lines that is the same as the number of phases of the power current, each of the supply lines of a contactor block being connected to a respective phase of the power current, the supply lines being accessible on the outside of the fixed support via intermediate terminals,
• each contactor block comprises secondary lines, each secondary line being connected to a respective supply line via a respective intermediate terminal, the contactor blocks being movable between a joined position, in which each secondary line is electrically connected to a specific primary line via an intermediate terminal and is accessible on the outside of the contactor block via an output terminal block, and a disjoined position, in which each secondary line is not connected to a primary line, each contactor block further comprising a switching device, which is switchable between an open position, in which all of the secondary lines of this contactor block are open, and a closed position, in which all of the secondary lines of this contactor block are closed and do not prevent the current from flowing between the intermediate terminals and the output terminal block,
• wherein the electrical device also comprises a control block, which is movable between a joined position, in which the control block cooperates mechanically and electrically with the rest of the electrical device, and a disjoined position, in which the control block does not cooperate, either mechanically or electrically, with the rest of the electrical device,
• wherein when the control block is in the joined position, each contactor block is, on the one hand, held in the joined position, an electronic monitoring device of the control block also being connected to the switching device of each of the contactor blocks, the electronic monitoring device being configured to control the switching of each switching device independently of the other switching devices, wherein when the control block is in the disjoined position, the switching device of each of the contactor blocks is in the open state, while each of the contactor blocks is movable between its joined position and its disjoined position, independently of the other contactor blocks,
• and wherein the electrical connection between the secondary lines and the power units is provided by connectors, each connector being able to be disconnected from the one or more corresponding output terminal blocks when the one or more corresponding contactor blocks are in the disjoined position.