Protection accessory for a door of an electrical cabinet, said protection accessory comprising a frame, preferably rectangular in form, comprising at least: - a main opening, - a first border and a second border extending longitudinally in a first direction, parallel with and spaced apart from one another, - a third border and a fourth border extending longitudinally in a second direction substantially perpendicular to the first direction, parallel with and spaced apart from one another and each connecting the first border to the second border, the first border, the second border, the third border and the fourth border delimiting said main opening, said protection accessory is characterized in that it also comprises at least: - a first flap configured to partially block the main opening in an initial position and mounted movably around a first axis of rotation parallel to the first direction on the first border between the initial position and a maximally open position, - a second flap configured to partially block the main opening in an initial position and mounted movably around a second axis of rotation parallel to the first direction on the second border between the initial position and the maximally open position, - a first return element configured to allow the automatic return of the first flap from the maximally open position to the initial position, - a second return element configured to allow the automatic return of the second flap from the maximally open position to the initial position. - a main opening, - a first border and a second border extending longitudinally in a first direction, parallel with and spaced apart from one another, - a third border and a fourth border extending longitudinally in a second direction substantially perpendicular to the first direction, parallel with and spaced apart from one another and each connecting the first border to the second border, the first border, the second border, the third border and the fourth border delimiting said main opening, said protection accessory is characterized in that it also comprises at least: - a first flap configured to partially block the main opening in an initial position and mounted movably around a first axis of rotation parallel to the first direction on the first border between the initial position and a maximally open position, - a second flap configured to partially block the main opening in an initial position and mounted movably around a second axis of rotation parallel to the first direction on the second border between the initial position and the maximally open position, - a first return element configured to allow the automatic return of the first flap from the maximally open position to the initial position, - a second return element configured to allow the automatic return of the second flap from the maximally open position to the initial position. - a first flap configured to partially block the main opening in an initial position and mounted movably around a first axis of rotation parallel to the first direction on the first border between the initial position and a maximally open position, - a second flap configured to partially block the main opening in an initial position and mounted movably around a second axis of rotation parallel to the first direction on the second border between the initial position and the maximally open position, - a first return element configured to allow the automatic return of the first flap from the maximally open position to the initial position, - a second return element configured to allow the automatic return of the second flap from the maximally open position to the initial position.