This paper presents an analysis of the static losses due to the irreversible Barkhausen jump of the 180° Bloch wall separating infinitely large domains. A relation between the area swept by the wall and the corresponding duration of the jumps is obtained both on the basis of considerations of the pressure acting on the wall and by direct calculation of the energy loss. A similar problem was considered by Allia and Vinai, who adopted a simplified assumption of the domain of an infinitely long cylindrical shape.