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 (D1), parallel with and spaced apart from one another, - a third border and a fourth border extending longitudinally in a second direction (D2) substantially perpendicular to the first direction (D1), 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 (PI) and mounted movably around a first axis of rotation (A1) parallel to the first direction (D1) on the first border between the initial position (PI) and a maximally open position, - a second flap configured to partially block the main opening in an initial position (PI) and mounted movably around a second axis of rotation (A2) parallel to the first direction (D1) on the second border between the initial position (PI) 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 (PI), - a second return element configured to allow the automatic return of the second flap from the maximally open position to the initial position (PI). - a main opening , - a first border and a second border extending longitudinally in a first direction (D1), parallel with and spaced apart from one another, - a third border and a fourth border extending longitudinally in a second direction (D2) substantially perpendicular to the first direction (D1), 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 (PI) and mounted movably around a first axis of rotation (A1) parallel to the first direction (D1) on the first border between the initial position (PI) and a maximally open position, - a second flap configured to partially block the main opening in an initial position (PI) and mounted movably around a second axis of rotation (A2) parallel to the first direction (D1) on the second border between the initial position (PI) 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 (PI), - a second return element configured to allow the automatic return of the second flap from the maximally open position to the initial position (PI). - a first flap configured to partially block the main opening in an initial position (PI) and mounted movably around a first axis of rotation (A1) parallel to the first direction (D1) on the first border between the initial position (PI) and a maximally open position, - a second flap configured to partially block the main opening in an initial position (PI) and mounted movably around a second axis of rotation (A2) parallel to the first direction (D1) on the second border between the initial position (PI) 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 (PI), - a second return element configured to allow the automatic return of the second flap from the maximally open position to the initial position (PI). <EOS>