An actuator device for actuating equipment, the device comprising an electric motor that is arranged to be connected to an autopilot device and that is connected by a drivetrain to an outlet shaft, itself designed to be linked to a control instrument, the drivetrain incorporating stepdown gearing dividing the drivetrain into a high-speed segment (3.1) beside the motor and a low-speed segment (3.2) beside the outlet shaft, the device being characterized in that the high-speed segment includes a deactivator member for deactivating the autopilot device, the deactivator member comprising: · a first element (14.1) secured to a first portion (12.1) of the high-speed segment; · a second element (14.2) secured to a second portion (12.2) of the high-speed segment and connected to the first element in order to allow the first element to be angularly offset relative to the second element when a torque for transmission reaches a predetermined threshold; and · a detector member for detecting the angular offset, said detector member being designed to be connected to the autopilot device, the first element and the second element being mutually facing plates that are connected to each other by a partially declutchable rotary link element, namely a first plate (14.1) provided on one side with conductive tracks (20.1) and on its other side with a second set of conductive tracks (20.3), and a second plate (14.2) fitted on its face facing the first plate (14.1) with a set of conductive tracks (20.2), the conductive tracks (20.1, 20.3) of the first plate being electrically connected one by one as well as to a first ends of conductive blades having opposite ends rubbing against the tracks (20.2) of the second plate, the detector member including a stationary collector secured to a structure including brushes rubbing against the second set of conductive tracks (20.3) of the first plate (14.1). · a first element (14.1) secured to a first portion (12.1) of the high-speed segment; · a second element (14.2) secured to a second portion (12.2) of the high-speed segment and connected to the first element in order to allow the first element to be angularly offset relative to the second element when a torque for transmission reaches a predetermined threshold; and · a detector member for detecting the angular offset, said detector member being designed to be connected to the autopilot device, the first element and the second element being mutually facing plates that are connected to each other by a partially declutchable rotary link element, namely a first plate (14.1) provided on one side with conductive tracks (20.1) and on its other side with a second set of conductive tracks (20.3), and a second plate (14.2) fitted on its face facing the first plate (14.1) with a set of conductive tracks (20.2), the conductive tracks (20.1, 20.3) of the first plate being electrically connected one by one as well as to a first ends of conductive blades having opposite ends rubbing against the tracks (20.2) of the second plate, the detector member including a stationary collector secured to a structure including brushes rubbing against the second set of conductive tracks (20.3) of the first plate (14.1).