Our Low Voltage (LV) Switchgear Cabinets serve as the primary power control and distribution hub for large-scale industrial and commercial infrastructures. Engineered for reliability at the source, these cabinets receive high-amperage power and distribute it across the facility with precision protection against overloads and short circuits.
Constructed with a modular framework, this switchgear can be configured as a Main Distribution Board (MDB) or a Motor Control Center (MCC). Whether you are managing power for a heavy manufacturing plant, a data center, or a high-rise utility system, our cabinets provide a robust, standardized environment for circuit breakers, busbars, and intelligent monitoring equipment.
Modular "Flexible" Architecture: The cabinet utilizes a 25mm modular hole system, allowing for easy expansion, internal partitioning, and the mixing of fixed and withdrawable functional units.
High Short-Circuit Withstand: Designed with reinforced T2 copper busbars capable of withstanding significant electromagnetic stress during short-circuit events (up to 50kA/80kA).
Enhanced Operator Safety: Features physical internal separation (Forms 2, 3, or 4) to isolate the busbars from the functional units and cable terminals, minimizing the risk of accidental contact.
Intelligent Heat Dissipation: Engineered with a specialized ventilation duct system and optional smart-cooling fans to maintain stable temperatures even under maximum continuous load.
Corrosion-Resistant Enclosure: Built from high-quality cold-rolled steel or aluminum-zinc coated sheets with an industrial-grade epoxy powder finish for a 20+ year service life.
| Feature | Detailed Specifications |
|---|---|
| Rated Voltage (Ue) | AC 380V / 400V / 440V / 690V |
| Rated Insulation Voltage (Ui) | AC 1000V |
| Rated Current (In) | 630A, 1250A, 1600A, 2500A, up to 4000A |
| Short-Time Withstand Current (Icw) | 50kA / 80kA (1 second) |
| Ingress Protection | IP3X, IP4X, IP54 (Customizable) |
| Frequency | 50Hz / 60Hz |
| Standard Compliance | IEC 61439-1/2, CE, GB 7251.1 |
Heavy Industry: Primary power hubs for steel mills, cement plants, and chemical refineries.
Data Centers & Hospitals: Main switchgear for facilities requiring high-uptime reliability and seamless integration with ATS (Automatic Transfer Switches).
Infrastructure Projects: Reliable power distribution for airports, railway stations, and metropolitan utility grids.
Renewable Energy: Main AC combiner and distribution station for large-scale solar and wind farms.
Total Customization: From the choice of circuit breakers (ACB/MCCB brands like Schneider, ABB, or CHINT) to the specific cable entry orientation (Top/Bottom), we build to your single-line diagram (SLD).
Gas-Tight Copper Busbars: All busbars are precision-machined and tinned to prevent oxidation, ensuring a low-resistance connection for decades.
Advanced Monitoring Ready: Cabinets can be equipped with smart meters, RS485/Modbus communication, and temperature sensors for real-time remote monitoring via SCADA.
Factory Routine Testing: Each unit undergoes rigorous dielectric tests, grounding continuity checks, and mechanical sequence tests before shipment.
Q: Does the cabinet support withdrawable (draw-out) circuit breakers?
A: Yes. We offer both "Fixed" and "Withdrawable" designs. Withdrawable units are highly recommended for critical applications to allow for rapid maintenance and replacement without powering down the entire board.
Q: What is the lead time for a custom-wired switchgear unit?
A: Depending on the complexity and component selection, custom cabinets typically ship within 4–6 weeks from the approval of the engineering drawings.
Q: Can you provide the cabinet "Empty"?
A: Absolutely. We provide high-quality "empty" enclosure kits with busbar supports for local panel builders and system integrators who prefer to do their own wiring.


XL-21 Low-voltage power distribution cabinet is suitable for power distribution of three-phase four-wire or three-phase five-wire system with AC voltage of 500 volts and below in power plants and industrial and mining enterprises. XL-21 low-voltage power distribution cabinet is installed against the wall of the indoor device, and inspected in front of the screen. The shell IS made of steel plate bending, and the knife switch handle is on the upper part of the right column in front of the box, which can be used for switching power supply. According to the needs of users, different types of circuit breakers with different current levels can be selected to meet the needs of different users.










