In the diploma thesis, the method of designing and all associated elements are explained using the Schrack Design program. The Schrack Design program is extremely suitable for the design of manifolds due to the simplicity of creating schemes. Engineered manifolds are used in construction and industry. Within the program, it is possible to test whether technical regulations and standards are met. Through the work, standard technical regulations and norms were determined. Protective measures were also defined and selectivity was verified using the aforementioned program, Schrack Design. Program simulations can be used when creating a study of protection settings. The tables contain an analysis of the protection effect. The results of the analysis are documented with the above tables in a graphic display. During the final settings of the protective devices, explanations with the necessary simulations are attached as evidence. Complete documentation created in the Schrack Design program is included in the thesis. For all selected elements of the electrical network, there is access to technical data from the manufacturer, Schrack's catalog. Diagrams with single-pole and three-pole symbols are shown in the pictures. The thermal calculation option of the distributor was used