HJ-FDS Series Fixed-Mounted Switchgear

Up to 3150A / 50kA / Rugged & Reliable

The HJ-FDS Series Fixed-Mounted Switchgear is a highly robust, universally applicable low-voltage power distribution board. Designed with a fixed-installation architecture and a simplified internal structure, it offers a straightforward, low-maintenance, and highly economical solution for stable electrical loads without compromising on safety or power capacity.

Ideal for Stable Loads & Budget-Optimized Projects:

✓ Power Plants, Substations & Infrastructure
✓ General Industrial Factories & Mining Sites
✓ Commercial Buildings & Lighting Distribution
✓ Pumping Stations & Water Treatment Facilities

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Core Advantages

Technical Specs

1. Rugged & Universal Framework

Built to last in demanding environments. The cabinet frame is constructed from high-strength cold-formed steel (8MF profiles) with partial welding and bolting. This rigid structure provides exceptional mechanical endurance and seismic resistance, ensuring decades of reliable service.

2. Optimized Thermal Management

Engineered for maximum natural cooling. The cabinet features strategically placed ventilation slots at the top and bottom. During operation, heat generated by internal components rises and exhausts through the top louvers, while cool air is naturally drawn in from the bottom, creating a highly efficient "chimney effect" that prevents overheating.

3. Exceptional Cost-Efficiency & Low Maintenance

By utilizing a fixed-mounted design, the HJ-FDS significantly reduces complex moving parts and mechanical interlocks compared to withdrawable switchgear. This minimalist engineering approach translates to a vastly lower initial CAPEX and practically zero mechanical maintenance (OPEX) over its lifecycle.

4. Ergonomic & Safe Operation

The instrument panel doors are connected to the framework via specialized concealed hinges, allowing for a wide 130-degree opening angle for easy installation and maintenance. The doors and structural components are connected using braided copper grounding straps, ensuring a complete and safe protective grounding circuit.

Global Factory Acceptance & Turnkey Support

Every HJ-FDS unit undergoes rigorous routine testing aligned with strict IEC 61439 standards before dispatch. We proudly support Remote Video FAT (Factory Acceptance Test) for our global EPC clients, ensuring total transparency.

To support local manufacturing and joint ventures, this series is fully available in CBU (Completely Built Unit), SKD (Semi-Knocked Down), or CKD (Completely Knocked Down) delivery formats.

Technical Specifications

(Note: Parameters cover standard configurations based on the fixed-mounted series. Specific ratings will be tailored to your project's single-line diagram.)

Electrical & System Parameters
Compliance Standards	IEC 61439-1 / IEC 61439-2
Rated Operational Voltage (Ue)	400V / 690V AC
Rated Insulation Voltage (Ui)	690V / 1000V AC
Rated Main Busbar Current	1000A / 1600A / 2000A / 3150A
Withstand & Protection Ratings
Short-Time Withstand Current (Icw)	15kA / 30kA / 50kA (1s)
Peak Withstand Current (Ipk)	30kA / 63kA / 105kA
Operation Mechanism	Fixed Installation, Front Operation, Front/Rear Access
Enclosure Protection Degree	Standard IP30 (Customized IP40 available for harsher environments)

Normal Operating Environment

Ambient Temperature: -5°C to +40°C (Average over 24h ≤ +35°C).
Altitude: Standard ≤ 2000m.
Relative Humidity: ≤ 50% at +40°C (Higher humidity allowable at lower temperatures, e.g., 90% at +20°C).
Installation Site: Indoor areas strictly free from severe vibration, explosive dust, or severe chemical corrosion.