Product Overview
The XL-21 Series Power Distribution Cabinet is a versatile, closed-type indoor distribution solution engineered for AC 50/60Hz systems with rated voltages up to 415V. Renowned for its structural rigidity and simple layout, the XL-21 serves as a primary power receiver and feeder for industrial plants, mining operations, and commercial workshops.
This cabinet is designed to provide comprehensive protection against overloads, short circuits, and leakage. Its spacious internal design makes it the industry standard for housing Moulded Case Circuit Breakers (MCCB), contactors for motor control, and metering equipment. Whether used for light-load power distribution or as a centralized motor control center, the XL-21 provides a secure, IP-rated environment for your critical electrical infrastructure.
Key Technical Advantages
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High-Strength Structural Steel: Fabricated from cold-rolled steel plates with a thickness of 1.5mm to 2.0mm, ensuring the cabinet remains undeformed under the mechanical stress of heavy cabling.
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Flexible Component Integration: The internal mounting rails are adjustable, allowing for the seamless installation of international brands like Schneider, ABB, and Siemens or cost-effective domestic alternatives.
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Superior Safety Interlocking: Features a robust door-handle linkage system that ensures the cabinet remains securely locked during operation, preventing unauthorized access to live busbars.
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Efficient Heat Dissipation: Designed with natural ventilation slots on the side or door, optimized to maintain stable internal temperatures even when fully loaded.
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Ease of Installation: Equipped with bottom or top cable entry plates and a dedicated earthing busbar (PE), simplifying on-site wiring and ensuring consistent grounding.
Technical Specifications
| Feature |
Detailed Specifications |
| Rated Operating Voltage (Ue) |
AC 380V / 400V / 415V |
| Rated Current (In) |
100A, 250A, 400A, 630A |
| Short-Circuit Breaking Capacity |
15kA / 30kA |
| Phase Configuration |
3-Phase 4-Wire / 3-Phase 5-Wire |
| Enclosure Material |
Cold-Rolled Steel (Powder Coated) |
| Ingress Protection (IP) |
IP30 / IP40 / IP54 (Customizable) |
| Mounting Type |
Floor-Standing (Indoor) |
| Standard Compliance |
IEC 61439, CE, ISO9001 |
Primary Application Scenarios
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Industrial Workshops: Centralized distribution for production machinery and industrial lighting circuits.
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Motor Control Centers: Housing DOL (Direct-On-Line) starters and Star-Delta configurations for pumps and fans.
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Commercial Infrastructure: Reliable power hubs for shopping malls, hospitals, and high-rise basement substations.
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Mining & Heavy Industry: Rugged protection for power systems in dusty or high-vibration environments.
Why Choose Our XL-21 Distribution Cabinets?
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Anti-Corrosion Finish: Every cabinet undergoes a multi-stage pickling and phosphating process followed by a high-durability epoxy powder coating (Standard RAL 7035), resisting rust and scratches for over 20 years.
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Smart Metering Options: We can pre-configure the front panel with digital multi-function meters for real-time monitoring of current, voltage, and power factor.
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Custom Wiring Service: We offer fully wired "Turnkey" panels, pre-tested in our facility for insulation resistance and functional continuity, allowing for "Plug-and-Play" site installation.
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Compact Footprint: The XL-21 is designed to offer maximum circuit density while maintaining a slim profile, making it ideal for cramped electrical rooms.
FAQ
Q: Is the XL-21 suitable for outdoor installation?
A: The standard XL-21 is designed for indoor use (IP40). However, we can provide a modified version with a rain hood, outdoor-grade seals, and an IP54/IP55 rating for sheltered outdoor environments.
Q: What is the maximum breaker size I can fit in this cabinet?
A: The XL-21 typically accommodates main breakers up to 630A. For requirements exceeding 800A, we recommend our GGD or GCS series switchgear.
Q: Can I request a specific RAL color for my project?
A: Yes. While light gray (RAL 7035) is our standard, we can provide any RAL color to match your facility's existing electrical equipment.
Low voltage power distribution cabinet
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.
