Weight of the secondary distribution box

The weight of a typical secondary distribution box (SDB) ranges from 15 kg to 50 kg, depending on size, material, and configuration.OverviewA secondary distribution box (SDB) receives power from the main distribution board and distributes it to branch circuits or floor modules through snap-on extender cables. It can include terminal blocks for custom wiring and is usually finished with a powder-coated metal enclosure for durability and safety .Factors Affecting WeightMaterial: Most SDBs are made of sheet metal or powder-coated steel, which contributes significantly to weight. Plastic or composite enclosures are lighter but less common in industrial applications.Size and Capacity: Larger SDBs with more circuit breakers, busbars, or terminal blocks weigh more. Compact SDBs for small branch circuits may weigh as little as 15–20 kg, while larger units for commercial or industrial use can reach 40–50 kg.Internal Components: The inclusion of busbars, breakers, fuses, and wiring adds to the total weight. Fully equipped SDBs are heavier than empty enclosures.Installation ConsiderationsMounting: SDBs are typically wall-mounted or floor-mounted. The supporting structure must account for the maximum weight, including all internal components.Transport: For handling and installation, consider the weight for lifting and positioning, especially in multi-story buildings.Typical SpecificationsVoltage: 400/230 V, 3-phase, 4-wire system Dimensions: Vary widely; common sizes are 300–600 mm width, 400–800 mm height, and 150–300 mm depthWeight Range: 15–50 kg depending on configuration and components In summary, while the exact weight depends on the SDB model and configuration, most secondary distribution boxes fall within the 15–50 kg range, with heavier units used in commercial or industrial applications.