(EN)
The present invention relates to a protection device (10) for protection against so called RSV-grenades comprising a grid configuration (20) with at least one profile element arranged to affect the electric detonation release arrangement (52) of such a grenade (50) by means of short-circuiting, characterized in that said at least one profile element (30; 30a; 30b; 30c; 30d; 30e; 30f) has a cross section being tapering in the principal incoming direction of the grenade. The invention also relates to a motor vehicle.