Closed Type Indoor Power Supply Cabinet LV Distribution Cabinet Heavy Duty Construction

The XL-21 Series Distribution Cabinet is a versatile and time-tested solution for indoor power distribution and motor control. Engineered for AC 50/60Hz systems with rated voltages up to 415V, it is the preferred choice for industrial workshops, pumping stations, and commercial plant rooms.

Known for its robust "box-type" structure, the XL-21 is a closed-type cabinet that offers excellent mechanical protection for internal components. It is specifically designed to house Moulded Case Circuit Breakers (MCCB), AC contactors, and thermal relays, making it an ideal choice for both simple power distribution and complex Direct-On-Line (DOL) motor starting applications.

• Heavy-Duty Construction: Built from 1.5mm–2.0mm high-quality cold-rolled steel plates. The precision-welded frame ensures the cabinet remains rigid even when supporting heavy busbars and large-gauge power cables.

• Compact Floor-Standing Design: The vertical, slim-profile architecture allows for high-density installation in electrical rooms with limited floor space.

• Flexible Component Mounting: Features adjustable internal brackets that support a wide range of international switchgear brands such as ABB, Schneider, Siemens, and CHINT.

• High Safety Rating: The door is equipped with a high-performance rubber sealing strip and a secure mechanical locking system, providing an IP40/IP54 barrier against dust and accidental contact.

• Optimized Thermal Dissipation: Designed with a combination of natural convection vents and spacious internal clearances to ensure that heat-generating components remain within safe operating temperatures.

1. Industrial Manufacturing: Main power distribution for production lines, textile mills, and machine shops.

2. Municipal Water Systems: Control cabinets for water pumps and sewage treatment aeration fans.

3. Commercial Buildings: Secondary distribution for HVAC systems, elevators, and basement lighting hubs.

4. Mining & Extraction: Durable, dust-resistant power centers for remote processing facilities.

• Anti-Corrosive Industrial Finish: Every cabinet undergoes a multi-stage pickling and phosphating process followed by a high-durability epoxy powder coating (Standard RAL 7035), ensuring a 20-year service life.

• Ready-to-Install Customization: We offer "Empty Enclosure" options for local integrators or "Fully Populated" turnkey panels, pre-wired and tested in our factory to your Single Line Diagram (SLD).

• Simplified Maintenance: The 130° wide-opening door provides unrestricted access to the breakers and terminals, making routine inspections and cable tightening fast and safe.

• Reliable Grounding: Integrated with a pre-installed copper grounding busbar, ensuring consistent safety and compliance with international electrical codes.

Q: What is the maximum breaker capacity for the XL-21?

A: The standard XL-21 is optimized for currents up to 630A. If your project requires higher amperage (800A–4000A), we recommend our GGD or GCS series modular switchgear.

Q: Can I get this cabinet in a different color to match my facility?

A: Yes. While light gray (RAL 7035) is the industry standard, we can provide any RAL color to suit your specific project requirements.

Q: Do you provide cable glands with the cabinet?

A: We provide a removable bottom gland plate as standard. We can pre-drill holes and supply specific IP-rated cable glands upon request.

GGD/XL-21 low voltage withdrawable switchgear assembly(hereinafter referred to as device)is the former state Ministry of Machinery, the Ministry of Electric power joint design group according to the industry authorities, the majority of power users and design units developed in line with the national conditions, with high technical performance indicators, can adapt to the development of the power market needs and can compete with the existing introduced products. In July 1996, the device passed the appraisal jointly presided over by two departments in Shanghai, and received the attention and affirmation of the production and manufacturing units and power use departments.

The device is suitable for power plant, petroleum, chemical, metallurgy, textile, high-rise building and other industries of power distribution system. In large power plants, petrochemical systems and other places with a high degree of automation, requiring computer interface, as a three-phase AC 50(60)Hz, rated working voltage 380V, rated current 4000A and below the distribution, centralized control of the motor, reactive power compensation of the low-voltage distribution device.

The device conforms to IEC439-1 and GB7251.1 standards.

1. The ambient air temperature is not higher than +40℃, not lower than -5℃, and the average temperature within 24 hours is not higher than +35℃.

2. The relative humidity at high temperature is not more than 50%, in the lower temperature is allowed to have a high relative humidity, such as +20℃ at 90%, but should take into account the temperature change, may occasionally produce moderate condensation.

3. The altitude does not exceed 2000 meters.

4. Installation tilt shall not exceed 5°.

5. No dust, corrosive gas and rain immersion indoors.