System to disconnect a device control pedal (1) from the device to which it is connected, said pedal (1) being connected to the device by a rod (2) whose end (3) is attached to a first spinning body (4) coupled to the pedal (1) and rotatable around an axis (5), the system comprising a second spinning body (6) provided with a pusher element (7), so that when the second spinning body (6) rotates due to a head-on collision of the vehicle, the rod (2) is displaced due to the action of the pusher element (7) so that it is separated from the first spinning body (4) coupled to the pedal (1).