Malaysia Home Electrical Distribution Box Models and Dimensions

Home electrical distribution boxes in Malaysia are available in PVC and metal enclosures, typically ranging from 4-way to 23-way configurations, SIRIM-approved, and designed for residential or light commercial use.

Common Models and Materials

1. PVC Distribution Boxes

   • Made from fire-retardant, insulated PVC for safety and durability .
   • Pre-assembled with main switch, neutral and earth bars, and DIN rails for MCB installation .
   • Module counts (ways): 6-way, 8-way, 10-way, 12-way, 14-way, 17-way, 23-way .
   • Covers: Clear or opaque hinged covers with secure latches.
   • Mounting: Wall-mountable with screw slots; pre-punched knockouts for cable entry/exit.
   • Applications: Residential homes, apartments, small offices, temporary power setups, or sub-distribution boards .

2. Metal Distribution Boxes

   • Made from sturdy metal EPS (Enclosure Power System) for enhanced durability .
   • Pre-equipped with main switch (63A, 80A, or 100A), MCBs (6A–32A), neutral and earth bars, and DIN rails .
   • Standard sizes: 4-way, 8-way, 12-way, 22-way; common module configurations include 8, 12, or 16 modules .
   • Applications: Residential electrical distribution, MCB/RCCB housing, and upgrading old DB boxes .

3. Metalclad Distribution Boards

   • Example: Davis DBM316 – 2 rows of 16 ways per row + 1 row of 11 ways, suitable for MCCB main switches .
   • Compatible with brands like CHNT, EPS, Fuji LS, Maxguard, Mitsubishi, and Terasaki .
   • Fitted with neutral and earth links; typically supplied without internal wiring or busbars .

Dimensions and Configurations

• PVC DB Boxes: Dimensions vary by module count; for example, a 12-way PVC box may measure approximately 400mm (H) x 300mm (W) x 120mm (D), while larger 23-way boxes are proportionally bigger .
• Metal DB Boxes: Standard 8-module, 12-module, or 16-module boxes typically range from 350–500mm in height, 250–400mm in width, and 120–150mm in depth .
• Metalclad DBs: Larger multi-row boards like DBM316 are designed for high-capacity residential or small commercial setups, with dimensions customized per manufacturer .

Certification and Safety

• All models are SIRIM-approved, ensuring compliance with Malaysian electrical safety standards .
• Designed for neat and safe wiring, with organized internal layouts for MCBs, RCCBs, and main switches.
• Fire-retardant materials and secure covers enhance safety in residential environments.

Summary

In Malaysia, homeowners can choose between PVC and metal DB boxes depending on durability, aesthetics, and installation needs. Module counts range from 4-way to 23-way, with pre-installed main switches, neutral/earth bars, and DIN rails for MCBs or MCCBs. SIRIM certification ensures compliance with local safety standards, and dimensions scale with the number of modules, making it suitable for single-family homes, apartments, or small commercial units .