Height dimensions of the distribution box
Distribution boxes typically range from 75 mm to 140 mm in height, with lengths from 100 mm to 415 mm and widths from 105 mm to 323 mm, depending on the series and type.
Standard Dimensions
Plastic distribution boxes come in various series with different dimensions:
- MB-ABC Series:
- MB-ABC500: 200 mm (L) × 174 mm (W) × 95 mm (H)
- MB-ABC700: 255 mm × 172 mm × 95 mm
- MB-ABC900: 328 mm × 172 mm × 95 mm These boxes are made of flame-resistant ABS plastic and comply with standards like BS EN60439-3 and JB/T7121-93 .
- HA, HK, LGD Series:
- Length: 100–415 mm
- Width: 105–323 mm
- Height: 75–140 mm These dimensions cover a wide range of modular distribution boxes suitable for residential, commercial, and industrial applications .
- TOP Series (TOP-TS, TOP-TF, TOP-LS, TOP-PS, TOP-PF, TOP-S):
- Available in 1-way to 36-ways configurations
- Dimensions vary according to the number of ways and mounting requirements .
Installation Height Guidelines
For safe and convenient use, distribution boxes should be installed at appropriate heights:
- Indoor wall-mounted boxes: 4.5–5.5 feet (1.4–1.7 meters) from the floor for easy access without bending or stretching .
- Outdoor boxes: At least 3 feet (0.9 meters) above ground to protect from water and dirt .
- Ground-mounted boxes: Raised 2–4 inches (5–10 cm) to avoid moisture damage .
- Special considerations: For homes, a height of 3–6 feet (0.9–1.8 meters) is recommended, with 4 feet being suitable for elderly or disabled users .
Material and Mounting
- Most distribution boxes are made of ABS plastic, which is flame-proof, impulse-proof, and provides excellent insulation .
- Mounting types: Flush-mounted (inside the wall) or surface-mounted (on the wall surface) depending on application and space .
Summary
When selecting a distribution box, consider the dimensions, number of ways, material, and mounting type. Ensure installation height follows safety standards to allow easy access, prevent water damage, and maintain compliance with electrical codes .
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