Sterilizing device (1) with electron beams for containers flexible thin wall comprising (C): a unit input or output (40, 60) protected against radioactive emissions generated by electron beams and comprising an outer casing (42) and a rotating body (56) housed at least partially in the compartment within the housing (42) a group of sterilization (20) having an internal chamber sterilization connected so as to be proof radioactive emissions downstream of the input unit (40) or upstream of the output unit (60) comprising at least an electron gun (28a, 28b, 28c) suitable to emit an electron beam in said sterilization chamber wherein the input unit or output (40, 60) comprises a solid cylindrical body (56) is instructed to rotate about an axis of rotation, provided with seats load (58) to carry a predetermined number of containers (C) from the external environment into said sterilization chamber or said sterilization chamber to the outside environment, in which the seating load (58) have a radial extent from the periphery into the cylindrical body so that determine solid portions (62) of the operating space in the form of cylindrical segments, brushing the surface of the internal compartment of the housing (42), avoiding radioactive emissions from the sterilization chamber.Dispositivo de esterilización (1) con haces de electrones para recipientes (C) flexibles de pared delgada que comprende: una unidad de entrada o salida (40, 60) protegida frente a las emisiones radiactivas generadas por haces de electrones y que comprende una carcasa externa (42) y un cuerpo giratorio (56) alojado al menos parcialmente en el compartimento dentro de la carcasa (42) un grupo de esterilización (20) que tiene una cámara de esterilización interna conectado de modo que sea a prueba de emisiones radiactivas aguas abajo de la unidad de entrada (40) o aguas arriba de la unidad de salida (60), que comprende al menos un cañón de electrones (28a, 28b, 28c) adecuado para emitir un haz de electrone