Low Voltage distribution panel
Low Voltage distribution panel
DB/SDB(Distribution Board/Sub-Distribution Board )
DB/SDB(Distribution Board/Sub-Distribution Board )
DB/SDB(Distribution Board/Sub-Distribution Board )
DB/SDB(Distribution Board/Sub-Distribution Board )
DB/SDB(Distribution Board/Sub-Distribution Board )
DB/SDB(Distribution Board/Sub-Distribution Board )
DB/SDB(Distribution Board/Sub-Distribution Board )
DB/SDB(Distribution Board/Sub-Distribution Board )
DB/SDB(Distribution Board/Sub-Distribution Board )
DB/SDB(Distribution Board/Sub-Distribution Board )

DB/SDB(Distribution Board/Sub-Distribution Board )

DB/SDB (Distribution Board/Sub-Distribution Board) is a standardized low-voltage power distribution solution. The Main Distribution Board (DB) serves as the core distribution unit of the power system, while the Sub-Distribution Board (SDB) further distributes power to end-use equipment. This product series covers a rated current range from 63A to 1600A, suitable for various commercial, industrial, and residential buildings, meeting different environmental power distribution requirements.


Detailed Technical Specifications


Parameter Category

Technical Specifications

Rated Characteristics

Rated Current (In): 63A, 100A, 250A, 400A, 630A, 800A, 1000A, 1250A, 1600A
Rated Operational Voltage (Ue): 230V/400V AC
Rated Insulation Voltage (Ui): 690V AC
Rated Frequency: 50Hz/60Hz

Short-circuit Performance

Rated Short-time Withstand Current (Icw): Up to 25kA/1s
Rated Peak Withstand Current (Ipk): Up to 63kA

Protection Degree

IP42 (Indoor standard), IP54 (Outdoor or high protection environments)

Enclosure Material

Premium galvanized steel (Thickness: 1.2mm-2.0mm) or 304 stainless steel (Special environments)

Enclosure Dimensions

Various sizes: 400x300x200mm to 1000x800x300mm (HxWxD)

Cable Entry/Exit

Bottom entry/exit (Standard), Top entry/exit, Side entry/exit (Optional)

Compliance Standards

IEC 61439, IEC 60529 and relevant national standards

Key Product Features


1.High-quality Protection Design

    Special anti-corrosion treatment (Phosphating + Epoxy resin powder coating) provides excellent corrosion resistance

    Reasonable ventilation and heat dissipation design ensures long-term stable operation

    Optional stainless steel material suitable for special environments

2.Modular Flexible Configuration

    Standardized modular design supports various circuit breaker installations (MCB, MCCB, RCCB, RCBO)

    Configurable with multiple functional units: Main switch unit, Lighting circuit unit, Socket circuit unit, Motor control unit

    Easy expansion allows for adding circuits or upgrading capacity according to changing power demands

3.Safe and Reliable Protection

    Fully isolated design with complete separation of live parts prevents accidental contact

    High-quality copper busbar connections with low impedance and high conductivity reduce energy loss

    Comprehensive earthing system ensures personal safety

    Optional transparent polycarbonate covers for easy status checking while providing protection

4.Easy Installation and Maintenance

    Front wiring design facilitates installation and maintenance

    Spacious wiring space convenient for cable entry and wiring

    Clear labeling system supporting multilingual markings

    Modular structure allows for quick replacement of components

5.Diverse Application Options

    Indoor type: Wall-mounted, Floor-standing

    Outdoor type: Waterproof and dustproof, suitable for outdoor installation

    Tamper-proof type: Lockable design prevents unauthorized operation

    Aesthetic type: Suitable for venues where appearance is important

Typical Applications

    Commercial Buildings: Shopping malls, office buildings, hotels, hospitals

    Industrial Facilities: Factories, workshops, warehouses

    Residential Projects: Apartment buildings, villas, residential complexes

    Public Facilities: Schools, airports, stations, ports

    Infrastructure: Water treatment plants, communication base stations

Quality and Service Assurance

    Our DB/SDB distribution boards are designed and manufactured in accordance with international standards, undergoing strict quality control processes to ensure each product meets relevant safety standards. We provide professional technical support, fast delivery and comprehensive after-sales service, offering reliable power distribution solutions for global customers.


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