Product Certification
XL-21 AC Low Voltage Power Distribution Cabinet
Rated Voltage
Rated Current
Purchase Quantity
Stock Remaining：12units
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Product Overview
XL-21 AC low voltage power distribution cabinet is suitable for power users such as power plants, substations, and industrial and mining enterprises with AC 50Hz, rated working voltage 380V, and rated working current up to 4000A. It is used for energy conversion, distribution, and control of power, lighting, and distribution equipment. The product features high breaking capacity, good dynamic and thermal stability, flexible electrical schemes, convenient combination, strong practicality, novel structure, and high protection level. It can be used as an update and replacement product for low voltage switchgear assemblies. XL-21 AC low voltage power distribution cabinet complies with IEC439 ‘Low-voltage Switchgear and Control Equipment’, GB7251 ‘Low-voltage Switchgear Equipment’ and other standards.
Safe and Reliable
Equipped with comprehensive protection functions, including overload protection, short circuit protection, leakage protection, etc., ensuring electrical safety
Modular Design
Adopts standardized modular design, easy installation and maintenance, strong scalability, and flexible configuration according to needs
High Efficiency and Energy Saving
Uses low-loss components to reduce energy consumption and improve power utilization
Intelligent Monitoring
Optional intelligent monitoring system available, achieving remote monitoring, fault diagnosis, and automated control
High Quality Materials
Shell made of high-quality cold-rolled steel plate, high protection level, strong corrosion resistance, and long service life
Aesthetic and Elegant
Adopts modern design, beautiful appearance, suitable for various installation environments
Product Structure
XL-21 AC low voltage power distribution cabinet is an enclosed box-type structure made of bent steel plate. The knife switch operation handle is installed on the upper right column of the box front, which can be used as a power switching device. A voltmeter is installed on the front of the distribution box, indicating the voltage of the busbar. The distribution box has a door on the front. When the door is opened, all equipment inside the distribution box is exposed, facilitating maintenance and inspection. This distribution box adopts domestic self-designed components with compact structure, convenient maintenance, and flexible circuit schemes. The distribution box is equipped with air circuit breakers and fuses as short circuit protection, and also equipped with contactors and thermal relays. Operation buttons and indicator lights can be installed on the distribution box door.
- Busbar system: Includes main busbar and branch busbars, using rectangular copper bars with high current carrying capacity and low temperature rise
- Switching equipment: Includes circuit breakers, contactors, relays, etc., used for controlling and protecting circuits
- Protection devices: Includes overload protection, short circuit protection, leakage protection, etc., ensuring electrical safety
- Cabinet body: Made of high-quality cold-rolled steel plate by welding, with good mechanical strength and protection performance
- Measuring instruments: Used to measure electrical parameters such as voltage, current, and power
- Secondary circuits: Used for control, measurement, and protection
Model Meaning
X L - 21 - □
│ │ │ └── Series Number
│ │ └────────── Design Number
│ └───────────────── Power
└──────────────────── Control Box
Main Components
| Component Part | Function Description |
|---|---|
| Cabinet Body Structure | Made of high-quality cold-rolled steel plate, sturdy structure, standardized dimensions, convenient for transportation and installation. |
| Main Busbar | Provides stable main power input and output for the system, usually made of copper bars. |
| Incoming Unit | Responsible for introducing power from the power source into the distribution cabinet. |
| Outgoing Unit | Distributes power from the distribution cabinet to loads or lower-level distribution cabinets. |
| Circuit Breaker Unit | Includes molded case circuit breakers (MCCB), air circuit breakers (ACB), etc., used for protection and control of distribution circuits. |
| Protection and Control Circuits | Includes relay protection devices, current transformers, voltage transformers, indicator lights, buttons, meters, etc. |
| Ground Wire and Grounding System | Provides reliable grounding protection, ensuring operation and safety. |
| Ventilation and Heat Dissipation System | Equipped with cooling fans or ventilation holes to ensure cabinet temperature remains within a reasonable range. |
| Wiring Terminals and Wiring | Equipped with terminal blocks, wire connection boards, etc., facilitating wiring and connections. |
| Operation and Indication Mechanism | The cabinet is equipped with operation handles, closing/opening buttons, indicator lights, meters, remote operation interfaces, etc., facilitating operation monitoring and control. |
XL-21 low voltage power distribution cabinet can be used in conjunction with GGD Low Voltage Distribution Cabinet, GCK Low Voltage Drawer Cabinet, Online Soft Starter, Low Voltage VFD and other products to build a complete distribution and motor control system. For example, in industrial production, XL-21 low voltage power distribution cabinet serves as the main distribution equipment, providing stable power for multiple Online Soft Starters and Low Voltage VFDs, achieving reliable control of various production equipment.
Product Specifications
| Model | Rated Voltage (V) | Rated Current (A) | Rated Short-Circuit Breaking Current (KA) | Rated Short-Time Withstand Current (1s) (KA) | Rated Peak Withstand Current (KA) |
|---|---|---|---|---|---|
| XL-21-100 | 380 | 100 | 15 | 15 | 30 |
| XL-21-200 | 380 | 200 | 15 | 15 | 30 |
| XL-21-400 | 380 | 400 | 15 | 15 | 30 |
| XL-21-630 | 380 | 630 | 25 | 25 | 50 |
| XL-21-800 | 380 | 800 | 25 | 25 | 50 |
| XL-21-1000 | 380 | 1000 | 30 | 30 | 63 |
| XL-21-1250 | 380 | 1250 | 30 | 30 | 63 |
| XL-21-1600 | 380 | 1600 | 50 | 50 | 105 |
| XL-21-2000 | 380 | 2000 | 50 | 50 | 105 |
| XL-21-2500 | 380 | 2500 | 50 | 50 | 105 |
| XL-21-3200 | 380 | 3200 | 50 | 50 | 105 |
| XL-21-4000 | 380 | 4000 | 65 | 65 | 143 |
Fuse Combination Switch
| Model | Rated Current (A) | Fuse Rated Current (A) | Remarks |
|---|---|---|---|
| HR3-400/34 | 400 | 150, 200, 250, 300, 350, 400 | No fuse body when installing isolation knife |
Current Transformers
| Model | Rated Current (A) | Secondary Current (A) | Remarks |
|---|---|---|---|
| LM-0.5 | 75, 100, 150, 200, 300, 600 | 5 |
Circuit Breakers
| Model | Fuse Rated Current (A) | Remarks |
|---|---|---|
| RL1-15 | 15, 2, 4, 5, 6, 10, 15 | |
| RL1-60 | 60, 20, 25, 30, 35, 40, 50, 60 | |
| RL1-100 | 100, 30, 40, 50, 60, 80, 100 | |
| RL1-200 | 200, 80, 100, 120, 150, 200, 250, 300, 350, 400 | |
| RL1-400 | 400, 150, 200, 250, 300, 350, 400 |
AC Contactors
| Model | Rated Current (A) | Coil Voltage (V) | Remarks |
|---|---|---|---|
| CJ10-10 | 10 | AC110/220/380 | |
| CJ10-20 | 20 | AC110/220/380 | |
| CJ10-40 | 40 | AC110/220/380 | |
| CJ10-80 | 80 | AC110/220/380 | |
| CJ10-150 | 150 | AC110/220/380 |
Normal Operating Environment
- The ambient air temperature shall not exceed +40°C and not be lower than -5°C. The average temperature within 24 hours shall not exceed +35°C.
- For indoor installation and use, the altitude of the installation site shall not exceed 2000m.
- The relative humidity of the surrounding air shall not exceed 50% when the maximum temperature is +40°C, and higher relative humidity is allowed at lower temperatures (e.g., 90% at +20°C). The influence of possible condensation due to temperature changes should be taken into account.
- The inclination of the equipment during installation shall not exceed 5° from the vertical plane.
- The equipment should be installed in places without severe vibration and shock, and where electrical components will not be subject to corrosion.
- Users shall negotiate with the manufacturer for special requirements when they have them.
Technical Parameters
| Parameter Name | Technical Indicator |
|---|---|
| Rated Voltage | AC380V/220V |
| Rated Frequency | 50Hz |
| Rated Current | 100A-4000A |
| Rated Short-Time Withstand Current | 15kA-65kA/1s |
| Rated Peak Withstand Current | 30kA-143kA |
| Protection Level | IP30-IP54 |
| Operation Mode | Manual/Electric |
| Installation Method | Indoor Floor-Standing |
Main Circuit Scheme Diagram
Ordering Instructions
- Product model, specifications, and quantity
- Rated voltage, rated current, short-circuit withstand current
- Operation mode (manual/electric)
- Protection level requirements
- Internal component configuration requirements
- Special requirements (such as color, dimensions, etc.)
- Delivery period and delivery location
Service Commitment
- Provide professional technical consultation and solution design
- Strictly produce and deliver according to contract requirements
- Provide on-site installation guidance and commissioning services
- Product quality guarantee period is 18 months
- Provide lifetime technical support and maintenance services
- Regular return visits to understand product usage
If you have any questions or needs about our products, please feel free to contact us at any time, and we will serve you wholeheartedly!
We welcome global agents, distributors, retailers, and other partners to join us in developing mutually beneficial business relationships. Our products have received good reviews from customers in many countries and regions, and we look forward to further expanding our influence. Consultation Hotline: 150-6499-9739 E-Mail: [email protected]
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