1. An electrical device, comprising:a circuit board including circuit traces and including two similar and/or identical contact area arrays transitioning into each other through rotation and/or displacement, a first contact area array of the contact area arrays being fitted with a first power module, a second contact area array adapted to be fitted with a second power module, each power module adapted to supply power to a respective electric motor, the circuit board including a via connected in an electrically conductive manner by way of circuit traces on the circuit board to a contact area of the second contact area array;
an additional circuit board having additional circuit traces and at least one connection device; and
a second connector piece;
wherein the second power module is mounted on the circuit board on the second contact area array, and being connected in an electrically conductive manner to the via by the circuit traces, the second connector piece being fitted on the additional circuit board and connected to the connection device in an electrically conductive manner by the additional circuit traces, the via being connected in an electrically conductive manner to the connection device by a cable.