Apparatus (electricity), boxes (electricity), distributors (electricity), apparatus and instruments for low voltage-distribution-systems, namely for the fields of conduction, transformation, storage, regulation and control as well as the fields of telecommunication, high frequency and regulation, electrical installation devices, namely junction boxes as well as plug-in sockets, mounting sockets and box sockets for these, line-up terminal boxes with terminal strips and line-up terminals, universal boxes for the installation of electrical devices, automatic boxes with standard section rails for the installation of equipment with snap securing, fuse boxes, fuse load disconnecting boxes, bus-bar boxes with rider fuse dividers or fuse load disconnectors, on-load switch boxes, bus-bar boxes, meter boxes and meter cabinets, empty boxes for the installation of devices via base plates or equipment carriers; cable bearers; cable-bearer channels as well as covers, partitions, mounting carrying slings, wall brackets and suspension rails for these; low-voltage switching installations consisting of boxes of insulating material and electrical devices for the supply of current; sheet-steel series switching installations consisting of sheet-steel cabinets and electrical devices for the supply of current