Low Voltage Distribution Boards
-- Steady & Reliable Manufacturer --
Product Overview
Low Voltage (LV) Distribution Boards are the final, critical link in the power chain, responsible for safely dividing the main electrical feed into smaller subsidiary circuits while providing individual protection for each. At DSJ Electrical, our LV boards are designed for high-performance industrial and commercial applications where reliability is non-negotiable. These boards are built to house a variety of components, including Air Circuit Breakers (ACB), Molded Case Circuit Breakers (MCCB), and residual current devices. We focus on a "High-Density" design that allows for the maximum number of outgoing circuits in a compact vertical panel. Whether you are powering a massive data center or a high-rise apartment complex, our distribution boards ensure that a fault in one circuit doesn't bring down the entire system. Our enclosures are made from high-strength steel with modular internal racking, making it easy to swap breakers or add new circuits as your facility's load profile changes.
The safety features of our LV distribution boards include full internal shrouding of busbars and clear, logical labeling of all outgoing feeders. We use high-purity copper busbars with silver-plated joints to minimize resistance and heat generation, ensuring the board stays cool even during peak demand. Our "Main-Bus-Tie" configurations allow for seamless integration with standby generators or UPS systems, providing the redundancy needed for critical infrastructure. Every board is custom-engineered to the specific fault level (kA) and load requirements of the client, ensuring that you don't pay for over-engineered hardware while never compromising on safety. With a focus on durability and ease of maintenance, DSJ LV boards are the trusted choice for electrical contractors worldwide.
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Low-Voltage Switchgear
CE Certified Main Distribution Board Construction Site Switchgear/Switchboard
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Medium-Voltage Switchgear
KYN28A-12 CE/UL Certified Metal Clad Switchgear Medium Voltage Switchgear/Switchboard
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Medium-Voltage Switchgear
KYN61-40.5 CE/UL Certified Metal Clad Switchgear Medium Voltage Switchgear/Switchboard
Electrical Partner
At DSJ, we transform complexity into reliability. With 42+ years of expertise in power distribution systems, our turnkey service integrates every phase – from regulatory compliance to final commissioning – ensuring seamless project execution for global clients. Whether it is the initial design or the final handover, we will strictly control every detail to ensure that the final delivered products perfectly meet your expectations. With us, you can focus on your core business with peace of mind, knowing that your project is in the hands of professional and reliable partners.
Introduction
The Low Voltage Distribution Board range from DSJ Electrical Co., Ltd is engineered for flexibility and longevity. We understand that no two buildings are the same, which is why our LV boards are built on a modular platform. This allows for top or bottom cable entry, front or rear access, and a variety of IP ratings to suit different environmental conditions. Our factory uses automated CNC punching and folding machines to ensure that every enclosure is built to exact specifications, providing a perfect fit for the internal busbar systems and switchgear. We integrate world-class components—either from our own DSJ line or from global brands like ABB and Schneider—to ensure that the heart of your electrical system is reliable.
What sets our LV boards apart is our attention to thermal management and wiring organization. We use advanced thermal imaging during our type-testing phase to identify potential hotspots and optimize ventilation. Inside the board, all secondary wiring is neatly trunked and ferruled with clear identifiers, making troubleshooting a breeze for your site electricians. We also offer "Smart Distribution" options, where each breaker is equipped with a digital trip unit that can communicate power quality, energy consumption, and fault history back to a centralized Building Management System (BMS). This turns a simple distribution board into a powerful data tool for energy savings and predictive maintenance. When you install a DSJ distribution board, you are installing a system designed for a 30-year operational life with minimal maintenance requirements.
Applications
- Data Centers: Providing high-reliability power distribution for server racks and cooling systems.
- Industrial Plants: Distributing power to motor control centers and production machinery.
- Healthcare Facilities: Ensuring critical power for operating theaters and life-support systems.
- Residential Buildings: Safe and organized power distribution for large apartment complexes.
- Renewable Energy: AC combiner boards for solar and wind power installations.
- Commercial Infrastructure: Main distribution for airports, railway stations, and stadiums.
Specifications
| Technical Aspect | Value / Standard |
|---|---|
| Rated Operating Voltage | Up to 1000V AC |
| Rated Current (Main Bus) | Up to 6300A |
| Short-Circuit Withstand | Up to 100kA |
| Form of Internal Separation | Form 2, Form 3, Form 4b |
| IP Protection | IP31, IP42, IP54, IP65 |
| Busbar Material | 99.9% Pure Copper (Tin/Silver Plated) |
| Enclosure Material | Cold Rolled Steel / Stainless Steel |
Why Choose Us
DSJ Electrical stands out because of our "Custom-Standard" approach. We offer the speed of a standard product with the flexibility of a custom-built solution. Our engineering team can take your single-line diagrams (SLD) and turn them into full production drawings in less than 48 hours. We use only the highest grade of copper and steel, ensuring that our boards are "Heavy-Duty" by design, not just by name. With a massive stock of circuit breakers and enclosures, our lead times are often 2-3 weeks shorter than the big multinational brands. Plus, our direct-factory pricing eliminates the middleman markup, giving you world-class quality at a highly competitive price point.
- Q: What is the "Form of Separation" and why does it matter?
- A: Forms (like Form 4b) define how internal parts are isolated to allow safe maintenance on one circuit while others are live.
- Q: Can you build boards with stainless steel enclosures?
- A: Yes, we offer SS304 and SS316 enclosures for outdoor or highly corrosive industrial environments.
Advantages
- Modular Construction: Easy to expand or modify on-site as load requirements change.
- High Short-Circuit Strength: Engineered to withstand massive electrical stresses safely.
- Superior Thermal Design: Natural or forced ventilation options to prevent overheating.
- Operator Safety: Full shrouding and safety interlocks prevent accidental contact.
- Smart-Ready: Compatible with all major communication protocols (Modbus, Profibus).
- Aesthetic & Durable: Professional finish that resists corrosion and looks great in any plant room.
Standards & Certifications
All DSJ LV Distribution Boards are designed and manufactured in accordance with IEC 61439-1 & 2, the latest global standard for low-voltage switchgear and controlgear assemblies. We take "Type Testing" seriously, with full certification for temperature rise, short-circuit withstand, and IP rating from independent test houses. Our factory is ISO 9001:2015 certified, and every board undergoes a comprehensive routine test before dispatch, including insulation resistance checks, dielectric tests, and a full functional sequence test of all control circuits. We also provide UL 891 compliant boards for projects requiring North American standards.
Payment & Shipping
For large institutional buyers, we offer Open Account terms or L/C at sight. Shipping is managed through our network of global freight forwarders. Since LV boards can be quite tall and heavy, we ship them on reinforced skids with heavy-duty plastic wrapping and edge protection. For ocean freight, we utilize 20ft or 40ft containers, ensuring boards are properly braced to prevent tipping. We provide all necessary customs documentation, certificates of origin, and installation manuals in the shipping packet.
DSJ Story
about DSJ
Building Power, Building Trust
Founded in 1983, DSJ is a leader in China's power distribution equipment. Headquartered in Beijing as the top-selling enterprise, we integrate manufacturing with trade and maintain full in-house capabilities in R&D, production, and sales. This enables efficient fulfillment of custom orders with industry-leading speed.
As a producer of distribution system, transformer, generator and photovoltaic products exceeding Chinese/international standards, DSJ supplies medium/low-voltage electrical equipment, and PV systems. For over four decades, we have delivered high-safety electrical solutions globally to public infrastructure, corporations, and households – achieving the industry's lowest return rate.
Committed to "meeting diverse needs through quality", DSJ leverages expert teams to provide one-stop services: pre-sales consultation & customization, flexible logistics/payment options, and reliable maintenance – ensuring seamless producer-maintainer-customer collaboration.
+86 18513032986 
FLC Center, Chaoyang District, Beijing, China