A switching cabinet having a rack with an upper and lower frame and vertical and horizontal struts which are disposed horizontally. The upper and lower frame have corner cavities, to which vertical frame profiles can be connected. The vertical frame profiles have profiled segments which are turned towards an inside of the rack. Access to the inside of the rack is improved when the vertical frame profiles may be mounted or dismounted afterwards which can be done with few components and involves little effort during mounting by including vertical profiles on at least one side of the rack, whose ends and profiled segments can be inserted into the corner cavity from the outer side of the rack, and by placing and fixing the profiled segments onto the connector of a corner cavity.