Lighting DB Boards
POLARIS Lighting Distribution Boards (DB Boards) are designed to provide safe, organised, and protected electrical power distribution to lighting circuits in industrial, commercial, and residential buildings. Each DB Board receives incoming power from the main distribution panel and distributes it to individual lighting circuits through MCBs, providing overload and short-circuit protection for every circuit. POLARIS Lighting DB Boards are built with quality enclosures, properly rated copper busbars, and well-organised wiring — ensuring that lighting circuits are cleanly separated from power circuits, faults are isolated quickly, and maintenance is simplified. POLARIS designs DB Boards with single-phase or three-phase incoming, RCCBs for earth fault protection, and surge protection devices where required.
Key Features
- Organises and distributes power to individual lighting circuits with MCB protection per circuit.
- Single-phase or three-phase incoming supply with proper neutral and earth busbar.
- RCCB (Residual Current Circuit Breaker) for earth leakage protection on lighting circuits.
- Surge Protection Device (SPD) for protecting lighting circuits against voltage surges.
- Double-door or single-door sheet steel enclosure with surface or flush mounting option.
- Clearly labelled circuit directory and colour-coded wiring for easy identification.
- Proper cable entry knockouts with gland plates for neat cable termination.
- Metering provisions for energy monitoring of lighting loads where required.
- Powder-coated finish for aesthetics and corrosion resistance in all environments.
- Designed as per IS 8623, IS 60439 standards for safety and compliance.
Frequently Asked Questions
What is a Lighting DB Board and why is it separate from a power distribution board?
A Lighting DB Board is a dedicated distribution board that supplies power exclusively to lighting circuits, keeping them isolated from heavy power loads like motors and machines. This separation prevents lighting circuit faults from affecting power equipment and makes load management, fault isolation, and energy monitoring of lighting loads much easier.
What MCB ratings are used in POLARIS Lighting DB Boards?
POLARIS uses MCBs with current ratings typically ranging from 6A to 32A for outgoing lighting circuits, depending on the connected lighting load. The incoming MCCB or MCB rating is selected based on total connected lighting load plus a suitable diversity factor.
Does POLARIS provide earth leakage protection in lighting DB boards?
Yes. POLARIS Lighting DB Boards include RCCBs (Residual Current Circuit Breakers) on lighting circuits for earth leakage protection. This is especially important in damp or outdoor lighting installations to protect against electric shock hazards.
Can POLARIS design lighting DB boards for three-phase balanced lighting systems?
Yes. POLARIS designs three-phase Lighting DB Boards where the lighting circuits are balanced across three phases to minimise neutral current and improve power quality. Load balancing calculations are done during the design stage based on the lighting load schedule.
What is the difference between a Lighting DB Board and a Sub-Distribution Board?
A Lighting DB Board is specifically designed for lighting circuits with low-current MCBs and RCCB protection. A Sub-Distribution Board (SDB) is a more general-purpose board that may supply both power and lighting loads with higher-rated feeders. POLARIS designs both types based on facility requirements.