The invention discloses a modularized bus-bar room, which comprises an independent shell of a box structure. Wall bushings which are installed through corresponding holes in the side wall of the shellin a penetrating mode and are used for corresponding to main bus-bars are fixed to the shell. Each main bus-bar coaxially penetrates an inner hole of the corresponding wall bushing and enters the shell. Isolation static contacts corresponding to the main bus-bars are fixed to the bottom wall of the shell. Each isolation static contact comprises a bus-bar connection conductor and a contact conductor used for being matched with a corresponding isolation movable contact outside the bas-bar room in an on-off mode. Because the modularized bus-bar room for switch cabinets of the invention has an independent shell, the bus-bar room can be installed as an integrated module and then be in butt joint with the other parts of a switch cabinet, and the bus-bar room can be directly installed on a workbench, the problem that the existing bus-bar room for switch cabinets needs to be installed in a high cabinet body is solved, installation is more convenient, assembly line production of the bus-bar room after modularization is realized, and the production efficiency can be improved.