Low-voltage distribution box dimensions

Low-voltage distribution boxes typically range from 400–1000mm in width, 1600–2200mm in height, and 400–800mm in depth, with variations depending on type, capacity, and manufacturer.

Standard Dimensions

• Cabinet Width: 400–1000mm
• Cabinet Height: 1600–2200mm (standard type) or up to 1900mm+ for busbar type with removable top cover)
• Cabinet Depth: 400–800mm These dimensions are common for modular low-voltage distribution cabinets like the XL-21 series, which are designed for independent installation and can be customized for specific applications .

Material and Construction

Low-voltage distribution boxes are typically made from cold-rolled steel, stainless steel, or galvanized steel with thickness around 2.0mm. They often feature epoxy resin electrostatic coatings for durability and corrosion resistance. Enclosures may have IP54 or higher protection ratings, suitable for indoor and outdoor environments .

Modular and Customizable Options

• Standard Type (P Type): Height 1700–1800mm, suitable for general installations.
• Busbar Type (M Type): Height 1900mm or more, with removable top cover for busbar installation.
• Width and Depth: Adjustable within the ranges above to accommodate different equipment layouts.
• Doors: Precision-cast adjustable hinges allow doors to open beyond 135°, facilitating maintenance and wiring .

Considerations for Selection

When choosing a low-voltage distribution box, consider:

• Load capacity and total power demand to avoid overloads .
• Installation environment: Indoor vs. outdoor, temperature, humidity, and chemical exposure .
• Future expansion: Leave extra space for additional breakers or modules .
• Compliance: Ensure the box meets standards such as IEC60439-1:1992, GB7251.1-2013, and GB7251.3-2006 . These dimensions and features ensure that low-voltage distribution boxes can accommodate a wide range of industrial, commercial, and residential applications while providing flexibility for installation and maintenance.