HJ-WDB Series Wall-Mounted Distribution Box
Up to 250A / Wall-Mounted / Indoor & Outdoor
The HJ-WDB Series Wall-Mounted Distribution Box is a highly versatile, compact, and secure terminal distribution solution. Engineered for final-circuit power routing, lighting control, and motor protection for loads up to 250A, it offers exceptional structural integrity and a wide range of IP ratings, making it the perfect fit for both high-end interior installations and harsh outdoor environments.
Ideal for Final-Circuit Distribution:
- ✓ Residential Complexes & Commercial Malls
- ✓ Hospitals, Schools & Public Institutions
- ✓ Light Industrial Facilities & Machine Control
- ✓ Outdoor Street Lighting & Telecom Stations
1. Versatile Installation & Sleek Aesthetics
Adapt to any architectural requirement. The HJ-WDB is available in both Surface-Mounted (exposed) and Flush-Mounted (concealed) configurations. The clean, modern enclosure design features optional viewing windows, allowing it to blend seamlessly into residential corridors, hospital lobbies, or commercial utility rooms without disrupting the interior design.
2. Extreme Indoor & Outdoor Resilience
Never compromise on environmental protection. While standard indoor models provide reliable IP30/IP40 defense, our outdoor variants are engineered with a specialized double-door structure, rain-proof canopies, and high-quality rubber sealing gaskets. This ensures robust protection up to IP65, fully shielding internal components from heavy rain, dust storms, and corrosion.
3. Comprehensive Circuit Protection
Ensure absolute safety at the terminal level. Despite its compact footprint, the HJ-WDB efficiently integrates Miniature Circuit Breakers (MCBs), Molded Case Circuit Breakers (MCCBs), and contactors. It delivers comprehensive protection against overloads, short circuits, phase loss, and earth leakage, safeguarding end-users and sensitive appliances.
4. Robust Enclosure Construction
Built for durability and ease of maintenance. Manufactured from premium 1.2mm to 1.5mm cold-rolled steel or stainless steel, the fully welded enclosure provides superior mechanical impact resistance. The specialized hinge design allows the doors to open wider than 90 degrees, offering engineers unobstructed access for rapid wiring and inspection.
Global Factory Acceptance & Turnkey Support
Every HJ-WDB unit undergoes strict quality control, including dielectric strength tests and protective continuity verification, before dispatch. We supply these distribution boxes as either empty enclosures for local assembly or fully pre-wired CBU (Completely Built Units) according to your specific single-line diagrams.
Technical Specifications
(Note: Parameters cover standard configurations based on the JXF/JFF series. Specific dimensions and internal component layouts are fully customizable based on your project needs.)
| Electrical Parameters | |
| Compliance Standards | IEC 61439-1 / IEC 61439-3 |
|---|---|
| Rated Operational Voltage (Ue) | Up to 500V AC |
| Rated Current (In) | ≤ 250A |
| Rated Frequency | 50 Hz / 60 Hz |
| Wiring System Configurations | 3-Phase 3-Wire / 3-Phase 4-Wire / 3-Phase 5-Wire |
| Enclosure Protection Degree | IP20 / IP40 / IP43 / IP54 / IP65 (Model dependent) |
| Installation Types | Wall-Mounted (Surface exposed / Flush concealed) |
| Enclosure Material & Thickness | Cold-Rolled Steel / Stainless Steel (1.2mm or 1.5mm) |
| Door Configuration | Single Door (Metal/Window) / Double Door (for outdoor) |
Normal Operating Environment
- Ambient Temperature: -25°C to +40°C.
- Altitude: ≤ 2000m.
- Relative Humidity: ≤ 50% at +40°C (Indoor) / Can tolerate higher humidity outdoors.
- Installation Site: Free from intense vibration; outdoor models withstand direct sunlight and rain.
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