Emergency stop device comprising: - a body, - a control assembly comprising a control button that is mobile in translation along a control axis between a rest position and an actuated position, - an actuation assembly which comprises: - an actuation plunger that cooperates with said control button and an actuation spring mounted between said body and said actuation plunger, - a trip plunger designed to cooperate with at least one electrical contact unit and one trip spring mounted between said actuation plunger and said trip plunger and arranged to actuate said trip plunger when the control button is actuated from its rest position to its actuated position, - a latching member mounted on the trip plunger and mobile between: - a latching position in which it cooperates with a first stop of the body to lock the trip plunger in an actuated position and lock the actuation plunger and the control button, which are as one with the trip plunger, into a released actuated position, and - a retracted position in which it is freed from said stop to allow the trip plunger to return to a rest position, - a trip member that is mounted on the trip plunger and is mobile between a locking position in which it cooperates with a second stop of the body in order to prevent the trip plunger from moving from a rest position to an actuated position, and a retracted position in which it is freed from said second stop to allow the trip plunger to be tripped to said actuated position, - an unlocking assembly comprising an unlocking ring that can be actuated in rotation about said control axis and is arranged to cooperate with said control button to return it from its released actuated position to the rest position, - characterized in that the unlocking assembly comprises an unlocking spring mounted between the control button and the body, and arranged to actuate said control button towards its rest position. - a body, - a control assembly comprising a control button that is mobile in translation along a control axis between a rest position and an actuated position, - an actuation assembly which comprises: - an actuation plunger that cooperates with said control button and an actuation spring mounted between said body and said actuation plunger, - a trip plunger designed to cooperate with at least one electrical contact unit and one trip spring mounted between said actuation plunger and said trip plunger and arranged to actuate said trip plunger when the control button is actuated from its rest position to its actuated position, - a latching member mounted on the trip plunger and mobile between: - a latching position in which it cooperates with a first stop of the body to lock the trip plunger in an actuated position and lock the actuation plunger and the control button, which are as one with the trip plunger, into a released actuated position, and - a retracted position in which it is freed from said stop to allow the trip plunger to return to a rest position, - an actuation plunger that cooperates with said control button and an actuation spring mounted between said body and said actuation plunger, - a trip plunger designed to cooperate with at least one electrical contact unit and one trip spring mounted between said actuation plunger and said trip plunger and arranged to actuate said trip plunger when the control button is actuated from its rest position to its actuated position, - a latching member mounted on the trip plunger and mobile between: - a latching position in which it cooperates with a first stop of the body to lock the trip plunger in an actuated position and lock the actuation plunger and the control button, which are as one with the trip plunger, into a released actuated position, and - a retracted position in which it is freed from said stop to allow the trip plunger to return to a rest position, - a latching position in which it cooperates with a first stop of the body to lock the trip plunger in an actuated position and lock the actuation plunger and the control button, which are as one with the trip plunger, into a released actuated position, and - a retracted position in which it is freed from said stop to allow the trip plunger to return to a rest position, - a trip member that is mounted on the trip plunger and is mobile between a locking position in which it cooperates with a second stop of the body in order to prevent the trip plunger from moving from a rest position to an actuated position, and a retracted position in which it is freed from said second stop to allow the trip plunger to be tripped to said actuated position, - an unlocking assembly comprising an unlocking ring that can be actuated in rotation about said control axis and is arranged to cooperate with said control button to return it from its released actuated position to the rest position, - characterized in that the unlocking assembly comprises an unlocking spring mounted between the control button and the body, and arranged to actuate said control button towards its rest position.