Hollow wall of wall-mounted distribution box

Hollow wall-mounted distribution boxes are designed for installation in non-solid walls, providing secure housing for electrical components while allowing flush or recessed mounting.Design and StructureHollow wall-mounted distribution boxes are specifically made to fit hollow or partition walls, such as drywall or hollow board walls. They typically feature a plastic housing with a front cover, sometimes reinforced with sheet steel for added stability, and are designed to accommodate DIN rails for mounting circuit breakers and other modular devices (Eaton KLV-24HWP-F) . The boxes come in various module widths and row configurations, for example, 2-row 24TE or 8-module versions, allowing flexibility depending on the electrical load and installation requirements .Installation FeaturesThese boxes are installed flush with the wall surface, providing a neat and safe finish. They include hollow wall anchors or multi-perforated supports to secure the box within the wall cavity . Some models, like ABB System Ideal or AVE RIVOBOX, allow modular expansion or combination of multiple boxes horizontally or vertically, which is useful for renovations or future upgrades . Installation depth is typically around 75–100 mm, with additional plaster compensation options to ensure a flush finish .Standards and SafetyHollow wall distribution boxes comply with IEC/EN 60670-24, DIN 43871, and IEC/EN 62208, ensuring safety and compatibility with low-voltage installations . They are often made of halogen-free materials and meet glow wire test requirements, making them suitable for residential and commercial applications . Fire-resistant and sound-tight versions are also available for higher safety and insulation demands .Accessories and Practical ConsiderationsMany hollow wall boxes come with cable holders, labeling sheets, and spirit levels to facilitate tidy wiring and accurate installation . Some systems offer expanders or metallic hooks to increase internal volume or restore functionality if parts are damaged . The front covers can be sealed, laser-marked, or fitted with security locks depending on the application .ApplicationsHollow wall-mounted distribution boxes are ideal for residential, utility, and commercial buildings where walls are not solid. They allow for easy installation of sockets, switches, and circuit breakers, and are particularly useful in renovation projects where walls are already closed . Their modularity and accessory options make them adaptable to a wide range of electrical installations.