Abstract: A data interruption device (1) is described, between a plurality of control units (2) communicating through at least one communication protocol (6), designed to produce an electromagnetic interference inhibiting a data communication between the plurality of control units (2); moreover, the device (1) is equipped with at least one transformer (3) designed to transfer at least one signal on at least one transmission means (5) of the communication protocol (6), inducing such electromagnetic interference.