Designed to comply with international standards such as IEC 61439, our low-voltage combined electrical cabinets integrate main power distribution, branch circuits, motor control units (MCC), electrical protection, and smart monitoring into a single space-saving assembly.
Why Choose Combined Power Distribution Cabinets
Standard electrical installations often require separate cabinets for power distribution, motor control, and automation. A Combined Power Distribution Cabinet consolidates these functions into one engineered unit, delivering substantial operational and economic benefits:
Footprint Optimization: Saves up to 30% to 40% of electrical room floor space compared to traditional multi-cabinet layouts.
Streamlined Site Installation: Pre-wired and pre-assembled at our factory, converting complex field installation into a simple plug-and-play process.
Centralized System Monitoring: Operators can monitor main breakers, branch circuits, and motor starters from a single interface, accelerating daily maintenance and troubleshooting.
Enhanced System Safety: Built-in mechanical interlocks, fire-retardant internal insulation, and optimized thermal dissipation reduce electrical fault risks.
Technical Specifications
|
Item |
Specification / Technical Parameter |
|
Product Type |
Low Voltage Combined Power Distribution Cabinet |
|
Standard Compliance |
IEC 61439 / GB7251 / ISO9001 |
|
Rated Operational Voltage (\(U_e\)) |
AC 380V / 400V / 415V / 690V (Customizable to regional grid standards) |
|
Rated Insulation Voltage (\(U_i\)) |
Up to 1000V |
|
Rated Impulse Withstand Voltage (\(U_{imp}\)) |
8kV / 12kV |
|
Rated Frequency |
50Hz / 60Hz |
|
Main Busbar Rated Current (\(I_n\)) |
Up to 6300A |
|
Short-Time Withstand Current (\(I_{cw}\)) |
Up to 50kA / 80kA (1 second) |
|
Protection Rating (IP Code) |
IP30, IP40, IP54, IP65 (Indoor and Outdoor options) |
|
Cabinet Material |
Cold-Rolled Steel Sheet / Galvanized Steel / Stainless Steel 304/316 |
|
Sheet Thickness |
Frame: 2.0mm - 2.5mm; Enclosure/Doors: 1.5mm - 2.0mm |
|
Surface Treatment |
Electrostatic Epoxy Powder Coating (RAL 7032 / RAL 7035 or Custom) |
|
Busbar Material |
High-Purity T2 Copper Busbars (Tin-plated or Nickel-plated) |
|
Internal Partitioning Form |
Form 1 to Form 4b (As per IEC 61439) |
|
Installation Type |
Floor-mounted / Free-standing / Floor-anchored |
Modular Configuration and Component Selection
Customers can specify component brands based on project technical specifications, budget requirements, or local maintenance habits:
Main Power Distribution Unit: Centralized primary circuit management featuring air circuit breakers (ACB), molded case circuit breakers (MCCB), load isolation switches, and surge protection devices (SPD).
Sub-Distribution Circuit System: Secondary branch power management equipped with miniature circuit breakers (MCB), residual current devices (RCD), and organized distribution blocks.
Motor Control System (MCC): Integrated drive and motor control modules including Variable Frequency Drives (VFD), Soft Starters, Direct-On-Line (DOL) starters, AC contactors, and thermal overload relays.
Smart Monitoring and Automation Interface: Optional multi-function digital power meters, RS485 / Modbus communication gateways, PLC control cards, and system status indicator lights.
Supported Electrical Component Brands
Schneider Electric, ABB, Siemens, Eaton, Chint, LS Electric, or customer-designated local brands.
Tailored Customization Options
Every project presents unique physical and electrical constraints. Baihao Electric's engineering team offers bespoke solutions tailored to your exact drawings:
Enclosure Customization: Custom dimensions, top or bottom cable entry, front/rear door access, double-door configurations, and weather-proof outdoor canopies.
Busbar and Wiring Layout: Engineered busbar capacities tailored to short-circuit withstand requirements and optimized thermal dissipation pathing.
Appearance and Finish: Custom enclosure color matching, company logo silk-screening, warning labels, and multilingual schematic identification.
Engineering Precision and Manufacturing Process
Guangdong Baihao Electric enforces a strict 6-stage manufacturing workflow to ensure uncompromised quality for every exported cabinet:
Drawing Verification & Engineering: Our technical team reviews your Single Line Diagrams (SLD), CAD files, and Bill of Materials (BOM) to verify thermal limits, busbar spacing, and breaker coordination.
Precision Sheet Metal Fabrication: Enclosures are cut and formed using high-precision CNC laser cutters and bending machinery to ensure exact structural integrity and IP sealing.
Professional Busbar Bending & Assembly: High-purity T2 copper busbars are processed with CNC punching and bending machines, covered with insulation tubing, and securely installed.
Standardized Wiring: Skilled technicians execute internal wiring using flame-retardant trunking, organized cable ties, and clear ferrule markings following standard color codes.
Quality Testing and Inspection: Every finished cabinet undergoes strict quality controls, including visual inspection, wiring verification, insulation resistance testing, and high-voltage dielectric withstand tests.
Power-On Functional Testing: Circuit breakers, motor starters, and monitoring meters are energized and functional-tested before approval for shipment.
Export Packaging and Logistics Safety
To prevent damage, corrosion, or moisture penetration during long-distance international transit, every cabinet is packed according to ocean freight standards:
Wrapped in thick anti-static and moisture-proof vacuum film.
Protected with reinforced edge protectors and shock-absorbing foam.
Enclosed in IPPC-certified, fumigation-free plywood crates with heavy-duty wooden skids for forklift handling.
Primary Applications
Our Combined Power Distribution Cabinets are deployed globally across diverse industrial and commercial sectors:
Industrial Manufacturing
Production lines, steel mills, cement plants, automotive factories, and automated processing facilities.
Commercial Buildings
High-rise office towers, shopping centers, hotels, data centers, and hospitals.
Infrastructure and Utilities
Water treatment facilities, pumping stations, transportation hubs, and municipal engineering.
Energy Projects
Solar PV sub-distribution, energy storage control centers, and HVAC centralized systems.
Component Assembly & Mounting
Wiring & Electrical Connection
Quality Control & Functional Testing
Commissioning and Testing
FAQ
Our Certificate
