Modular Distribution Boards (DBs): A Complete Guide to ROW DBs in UAE
Introduction
A modular distribution board (DB)—also known as a ROW distribution board or simply Row DB—is the backbone of every safe and organized electrical installation. Whether in residential apartments, commercial spaces, or industrial facilities, DBs ensure that power is distributed safely across multiple circuits, while also providing protection through breakers, fuses, and residual devices.
With growing demand for multi row DBs, modularity and flexibility have become the key features that define modern electrical distribution solutions. Let’s break down what they are, the types available, the materials used, and why brands like IndoAsian and Al Fanar are trusted in this space.
What is a Modular Distribution Board?
A modular distribution board is a metal or insulated enclosure designed to house electrical protection devices like MCBs, RCCBs, and isolators. The term “modular” refers to the ability to configure them in different rows (Row DBs) depending on the number of outgoing circuits required.
For example, IndoAsian’s Superline ROW DBs are available in configurations from 1 row up to 6 rows, making them suitable for both small apartments and larger industrial applications.
Types of Distribution Boards (by Installation)
When it comes to installation methods, modular DBs are available in two main types:
- Flush Type DBs
- Installed within the wall surface, leaving only the cover door visible.
- Preferred in residential and commercial applications for aesthetic reasons.
- Compact and space-saving.
- Surface Mounted DBs
- Mounted directly on the wall surface.
- Easier to install and maintain.
- Ideal for industrial and retrofit projects where wall embedding is not practical.
IndoAsian’s product line includes both flush and surface mounted options, ensuring flexibility for contractors and consultants.
Materials Used in DBs
The choice of material defines the durability and safety of a distribution board:
- CRCA Steel Sheet
- Most premium modular DBs, including IndoAsian’s Superline series, are built from Cold Rolled Close Annealed (CRCA) sheet steel.
- Offers strength, fire resistance, and better protection against mechanical impact.
- IndoAsian applies a 9-tank pre-treatment with powder coating to prevent rust and corrosion.
- Plastic / Polycarbonate
- Lightweight and cost-effective.
- Common in small residential DBs, but less durable compared to metal options.
- Hybrid (Metal with Insulated Components)
- Some manufacturers combine metal enclosures with insulated busbar chambers for added safety.
Key Features of Modern Modular DBs
Modern ROW DBs are designed not just for functionality, but also for safety, compliance, and ease of installation:
- Ingress Protection (IP42 rating) – Protects against dust and accidental contact.
- Adjustable DIN Rails – Flexible mounting for different breaker sizes.
- Multiple Knockouts – Easy wiring and gland entry points.
- Neutral & Earth Links – Ensuring compliance with safety standards.
- Compliance with IEC 61439 – International certification for low-voltage switchgear assemblies.
- User-Friendly Design – Rounded edges, sliding locks, and detachable gland plates.
Manufacturers in the Market
Some of the leading manufacturers of modular distribution boards include:
- IndoAsian – Offers a complete range of Superline Row DBs with 1–6 rows, flush and surface mount, made of CRCA steel.
- Al Fanar – A trusted brand in the Middle East with robust modular DBs suitable for residential and commercial projects.
- Other Global Brands – Schneider Electric, Hager, and ABB also manufacture modular DBs, but IndoAsian and Al Fanar remain dominant in the UAE and GCC markets due to availability and pricing.
Applications & Utilities of Row DBs
A Row DB serves as the central hub for:
- Safe Power Distribution – Divides incoming power into multiple outgoing circuits.
- Overload and Short-Circuit Protection – Ensures safety through MCBs and RCCBs.
- Flexibility in Expansion – Multi-row DBs can accommodate future load additions.
- Aesthetic & Organized Wiring – Especially important in modern buildings where concealed wiring is used.
- Industrial Adaptability – Surface-mounted multi-row DBs are common in warehouses, factories, and workshops.
Why Choose Modular Distribution Boards?
- Scalability – From a small 1-row DB in an apartment to a 6-row DB in a commercial complex.
- Durability – CRCA steel enclosures withstand mechanical and thermal stress.
- Compliance – IEC standards ensure international safety levels.
- Trusted Brands – IndoAsian and Al Fanar provide reliable, certified products suitable for Middle East projects.
How to Install a Row Distribution Board (Step-by-Step)
Proper installation of a Row DB is critical for safety and compliance. Below is a general step-by-step process electricians follow:
- Load Requirement Assessment
- Identify the total connected load and calculate how many outgoing circuits are required.
- Decide the number of rows (e.g., 1-row for small flats, 4–6 rows for villas, warehouses, or offices).
- Select the Mounting Type
- Choose between flush mounting (inside the wall) or surface mounting (on the wall) depending on the site conditions.
- Marking & Positioning
- Mark the position of the DB according to electrical layout drawings.
- Ensure easy access for future maintenance and compliance with local regulations.
- Wall Preparation
- For flush type: cut an opening in the wall matching the DB dimensions.
- For surface type: prepare the mounting surface and fix anchor points.
- Fixing the Enclosure
- Secure the distribution board enclosure using screws and anchors.
- Check that it is level and firmly fixed.
- Cable Entry and Gland Fixing
- Use the knockouts provided on IndoAsian Row DBs for clean cable entry.
- Fit cable glands to ensure proper termination and IP protection.
- Mounting Protection Devices
- Fix MCBs, RCCBs, isolators, and other protective devices on the adjustable DIN rail.
- IndoAsian Row DBs provide flexibility with sliding locks and adjustable rails.
- Busbar and Neutral/Earth Link Connections
- Connect incoming supply to the main isolator.
- Distribute outgoing circuits to MCBs using busbars.
- Ensure neutral and earth are properly terminated at provided links.
- Testing & Commissioning
- Perform insulation resistance and continuity tests.
- Energize the system and check proper functioning of all protective devices.
- Label circuits clearly for identification.
How to Select the Right Modular Distribution Board
When selecting a modular or row distribution board, electricians and contractors should consider:
- Number of Rows (Capacity)
- Small apartments: 1–2 row DBs
- Villas and offices: 3–4 row DBs
- Industrial sites or commercial complexes: 5–6 row multi-row DBs
- Type of Installation
- Flush-mounted DBs – Ideal for aesthetics in residential or commercial interiors.
- Surface-mounted DBs – Best for workshops, warehouses, and retrofit projects.
- Material & Build Quality
- CRCA steel (like IndoAsian’s Superline DBs) ensures long life and resistance to corrosion.
- Plastic DBs may be used for smaller, low-cost projects but are less durable.
- Ingress Protection (IP Rating)
- For indoor use, IP42 (dust and touch-proof) is sufficient.
- For outdoor or harsh environments, select higher IP-rated enclosures.
- Compliance with Standards
- Always choose DBs that comply with IEC 61439 or local utility authority standards.
- Brand & Availability
- In the UAE & Middle East, trusted names include IndoAsian and Al Fanar, both known for compliant, ready-stock DBs.
- Future-Proofing
- Choose a DB with extra spare ways for expansion.
- A multi row DB is often a safer choice for projects expecting future load increases
Conclusion
Whether you’re an electrical contractor, consultant, or end-user, choosing the right modular distribution board—be it a Row DB or multi-row DB—is critical for safe, efficient, and scalable power distribution. With manufacturers like IndoAsian and Al Fanar offering a wide range of flush and surface-mounted DBs, you can be assured of quality, compliance, and long-term reliability.
At GoSwitchgear.com, we supply premium ROW DBs from trusted brands to suit residential, commercial, and industrial requirements. Explore our catalog and find the right modular distribution board for your project.
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