Product Page: XL-21 Low-Voltage Power Distribution Cabinet
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XL-21 Low-Voltage Power Distribution Cabinet
Industrial-Grade Power Distribution, Engineered for AIDC, Energy Storage & Smart Infrastructure
From standard motor control to mission-critical AI data center feeder panels - fully customizable, globally certified, OEM-ready.
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Product Overview
The XL-21 Low-Voltage Power Distribution Cabinet is a robust, modular power distribution solution designed for industrial facilities, commercial buildings, renewable energy plants, and next-generation infrastructure including AI data centers (AIDC) and battery energy storage systems (BESS).
Built on a cold-rolled steel enclosure with IP30–IP55 protection ratings and customizable busbar configurations, the XL-21 platform delivers reliable power distribution from 63A to 6300A across single or multiple feeder circuits. Every unit is engineered-to-order, ensuring your exact voltage, breaker, and layout requirements are met without compromise.
"We needed 48 feeder positions with selective coordination up to 85kA for a Southeast Asian data center project. QHECO delivered the XL-21 custom configuration in 18 days from drawing approval." - System Integrator, Singapore
Why the XL-21 Platform Outperforms Standard LV Panels
| Feature | Standard Market Panels | QHECO XL-21 Platform |
|---|---|---|
| Breaking Capacity | Up to 50kA (fixed) | 35kA – 100kA configurable |
| Voltage Architecture | AC only (380–480V) | AC / DC / Hybrid AC-DC ready |
| Enclosure Rating | IP30–IP40 | IP30–IP55, with NEMA options |
| Busbar Material | Standard copper | T2 copper / TMY aluminum / silver-plated options |
| Smart-Ready Design | Retrofit only | Pre-wired sensor channels & IMD mounting |
| Customization | Limited cutouts | Full OEM: branding, color, layout, special apertures |
| Certification | Single market | IEC / UL / CE / CCC / SASO multi-market |
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Series | XL-21 (Power Distribution Cabinet) |
| Rated Voltage | AC 380V / 400V / 480V / 690V; DC 500V / 750V / 800V |
| Rated Current | 63A – 6300A (main busbar) |
| Short-Circuit Withstand | Up to 100kA (Icw / Icu per IEC 60947-2) |
| Enclosure Material | Cold-rolled steel (1.2mm–2.0mm), optional stainless steel 304/316 |
| Protection Degree | IP30 / IP40 / IP54 / IP55 (customizable) |
| Dimensions (Standard) | H1800 × W600 × D400mm (custom sizes available) |
| Installation | Floor-standing, wall-mounted, or outdoor pedestal |
| Ambient Temperature | -25°C to +40°C (standard); -40°C to +60°C (custom) |
| Humidity | ≤ 50% at +40°C (higher ratings available for tropical climates) |
| Compliance | IEC 60439-1 / GB 7251.1 / UL 891 (upon request) |
| Surface Treatment | Epoxy powder coating (RAL 7035 standard); custom RAL colors |
| Internal Components | ABB / Schneider / Siemens / Chint / Delixi (customer-specified) |
Key Components & Configurations
- Main Incoming Section
Air Circuit Breaker (ACB): 630A – 6300A with electronic trip units (ETU)
Molded Case Circuit Breaker (MCCB): 100A – 1600A for sub-main distribution
DC-rated MCCB / DCCB available for 750V / 800V BESS & AIDC applications
- Outgoing Feeder Section
MCCB outgoing: 16A – 630A per feeder
Fuse switch disconnectors for motor starter circuits
Contactor + thermal relay combinations for motor control centers (MCC)
Surge protective devices (SPD) integrated per IEC 61643
- Busbar System
T2 electrolytic copper busbars, full-rated cross-section
Optional silver-plated busbars for high-humidity / corrosive environments
Insulated busbar shrouds with phase-segregation barriers
Temperature-rise tested to IEC 60439-1 (≤ 70K at rated current)
- Smart Monitoring Ready (Optional)
Pre-drilled mounting for thermal monitoring sensors (IR / fiber optic)
Insulation Monitoring Device (IMD) mounting rails for DC systems
Power quality analyzer cutouts and cable routing channels
Modbus / BACnet / OPC-UA communication backbone pre-wired
Application Scenarios
🏭 Industrial Manufacturing
Motor control centers, production line power distribution, HVAC feeder panels. XL-21 provides rugged, dust-resistant enclosures with high fault-current withstand for heavy industrial loads.
🏢 Commercial Buildings & Infrastructure
Shopping malls, hospitals, airports, and metro systems. Selective coordination ensures critical loads remain powered during localized faults.
⚡ Renewable Energy & Energy Storage (BESS)
Solar farm combiner boxes, wind farm substation LV panels, and battery energy storage system AC/DC distribution. Custom fire-rated enclosures and rapid fault response breakers meet the stringent safety requirements of energy storage projects.
🤖 AI Data Centers (AIDC)
Feeder panels for UPS distribution, PDU upstream protection, and 800V DC-ready architectures. The XL-21 platform supports 65–100kA breaking capacity and full selectivity required by modern AIDC infrastructure.
🌐 Export & EPC Projects
Pre-configured for Southeast Asian tropical climates, Middle Eastern desert conditions (NEOM, Expo City), and North American UL-listed requirements.
OEM & Customization Capabilities
At QHECO, "standard" is just the starting point. Our XL-21 platform is built for customization:
| Customization Level | Details |
|---|---|
| Branding | Private-label nameplates, silk-screened logos, custom color (any RAL code) |
| Dimensional | Non-standard heights, widths, depths; multi-cabinet lineups |
| Cutouts & Apertures | Special cable entry positions, gland plate configurations, busbar extension windows |
| Component Sourcing | Specified brands (ABB, Schneider, Siemens, LS, Hyundai) or cost-optimized alternatives |
| Intelligence Integration | Factory-installed smart meters, IoT gateways, edge controllers |
| Packaging & Documentation | Export-grade plywood crates, English/Arabic/Spanish manuals, AS-BUILT drawings |
Can't find the exact size? At QHECO, if you can imagine it, we can build it. 100% OEM & Customization Support. From special cutouts to your own brand logo, we provide one-stop service.
Quality Assurance & Certifications
✅ ISO 9001:2015 Quality Management System
✅ IEC 60439-1 / GB 7251.1 Type-Tested Assembly (TTA)
✅ CE Marking for European market access
✅ CCC Certification for China domestic projects
✅ SASO / Saber for Saudi Arabia and GCC markets
✅ UL 891 compliance available for North American projects (upon request)
Testing Protocols:
Dielectric withstand test (2.5kV AC / 1 minute)
Insulation resistance test (≥ 1 MΩ at 500V DC)
Temperature-rise test at rated current
Short-circuit withstand test (coordinated with breaker manufacturer)
Degree of protection verification (IP code testing)
Packaging & Logistics
| Item | Specification |
|---|---|
| Packaging | Export plywood crate with moisture-barrier film |
| Shipping | FOB Ningbo / Shanghai; CIF / DDP available |
| Lead Time | 15–25 days for standard configurations; 25–40 days for fully custom OEM |
| MOQ | 1 unit (sample orders accepted); volume discounts from 10 units |
| Warranty | 12 months standard; extended warranty available |
Frequently Asked Questions (FAQ)
Q: Can the XL-21 be used for 800V DC AIDC applications? A: Yes. We offer DC-rated configurations with specialized arc chutes, enhanced insulation coordination, and IMD (Insulation Monitoring Device) integration for 750V / 800V DC bus systems.
Q: What is the maximum breaking capacity available? A: Standard configurations support up to 65kA. For AIDC and large transformer applications, we provide 85kA and 100kA options with validated selectivity curves.
Q: Do you support private labeling and custom colors? A: Absolutely. We offer full OEM services including custom RAL colors, branded nameplates, silk-screened logos, and custom documentation.
Q: Can you integrate smart monitoring devices before shipment? A: Yes. Our "Smart-Ready" option includes pre-wired sensor channels, thermal monitoring mounting rails, and communication backbone wiring for Modbus / BACnet integration.
Q: What certifications do you hold for Middle Eastern and North American markets? A: We hold SASO/Saber for GCC markets and can configure to UL 891 requirements for North American projects. CE marking is standard for European exports.
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