EN
XL-21 Power Distribution Cabinet - Floor-Standing, 400V / 415V, up to 630A
XL-21 floor-standing power distribution cabinet, 400V/415V up to 630A, IP30-IP54, indoor and outdoor. Cabinets, CKD kits and drawings for local panel builders.
- Overview
- Applications
- Technical Data
- Services
- Quality Control
- Recommended Products
XL-21 Power Distribution Cabinet - Floor-Standing, 400V / 415V, up to 630A
XL-21 is the floor-standing power distribution cabinet that sits between a wall box and a full switchboard. Devices are mounted on a plate behind a lockable door, the cabinet stands on a plinth, and cables enter from the bottom. It is the standard choice for site distribution, workshop supply, pump and motor feeders, and secondary distribution in a building where a GGD section would be over-specified and a wall box would be too small.
WHERE IT FITS
Below 630A and where the fault level does not demand a fully verified busbar system, XL-21 does the same job as a GGD section at a fraction of the cost and footprint. It is a cabinet, not a modular switchboard: single or paired units rather than a lineup, plate-mounted rather than busbar-fed. That is exactly why it sells - most distribution points in a real installation are not substation main boards.
THE MISTAKE THAT COSTS PANEL BUILDERS MONEY
Two failures repeat across our markets. The first is a cabinet quoted for indoor use and then installed outdoors on a site or beside a pump house, where it corrodes and fills with dust because it was only IP30. The second is under-specified fault withstand at the incomer - the cabinet is fine electrically until a downstream fault, and then the plate-mounted assembly is not braced for it. We rate and document both properly, and we say plainly when a job needs a GGD instead.
WHAT WE SUPPLY
Complete cabinets built to your schedule, empty cabinets for you to fit out, or a CKD kit and drawings so your workshop builds it. The kit route matters here because a 2 m cabinet ships as an expensive volume: a South African distributor building locally from our kits and drawings cut total cost by 40%, with logistics previously running at 25% of their landed cost, and lead time fell from 3 months to 5 weeks.
CONSTRUCTION
Bolted or welded frame in cold-rolled steel, single or double front door, optional rear access, removable gland plate, adjustable mounting plate and 100 or 200 mm plinth. IP30 as standard indoors, IP54 with a full gasket set, and IP55 with a canopy for outdoor duty in Gulf and African sites. Powder coat over phosphate pre-treatment, RAL 7035 standard, with a coastal specification for UAE, Oman and East African coastal projects.
CONFIGURED FOR THE DESTINATION
415V/240V for Qatar, Kuwait, Oman, Nigeria and Kenya; 400V/230V at 60Hz for Saudi Arabia; 400V/230V at 50Hz for UAE, Iraq, South Africa and Eastern Europe; 380V/220V for Russia and CIS. Where the switchroom or the site runs at 50-55 C, the cabinet is derated and ventilated accordingly rather than being sold on its nameplate rating.
PRIMARY APPLICATIONS
- Secondary and sub-distribution in industrial plants and workshops.
- Site distribution and temporary supply on construction and infrastructure projects.
- Pump house, borehole and irrigation power cabinets.
- Water treatment, sewage and desalination plant feeders.
- Motor feeder and local control cabinets in small process plants.
- Building services distribution: HVAC plant rooms, lift motor rooms, car parks.
- Solar PV AC distribution and inverter output cabinets.
- Generator output and changeover cabinets.
- Cold store, warehouse and logistics facility distribution.
- Quarry, mining surface and cement plant auxiliary distribution.
TYPICAL CONTENTS
Incoming MCCB or fused switch, outgoing MCCBs and fuse switches, contactors and overload relays for motor feeders, capacitor bank for local power factor correction, metering and indication, terminal blocks and cable termination space.
WHO BUYS THIS FROM US
Panel builders producing to project schedules, distributors carrying a stocked size range, contractors on site distribution packages, and industrial end users replacing ageing cabinets. Volume buyers usually take drawings and a component kit and build locally.
REGIONAL FIT
- Middle East: heavy use on construction sites, water projects and industrial estates. Outdoor cabinets need IP55 with canopy and ventilation; internal temperature under direct Gulf sun goes far beyond the IEC +40 C reference and must be derated. SASO SABER for Saudi Arabia, DEWA, KAHRAMAA, MEW and Oman DCRP submittals supported.
- Africa: very high volume in mining surface plant, water, agriculture and industry. Dust and coastal corrosion drive the specification; wide grid voltage variation makes correct protection settings and under-voltage protection important. SONCAP under HS 8536 for Nigeria, KEBS PVoC for Kenya.
- Russia and CIS: 380V/220V, cold-climate construction with anti-condensation heating, EAC under TR CU 004/2011 and TR CU 020/2011.
- Eastern Europe: 400V, CE marked under LVD 2014/35/EU and EMC 2014/30/EU, built to EN 61439-2.
NOT SUITABLE FOR
Main distribution above 630A, or where the client requires a verified busbar system and Form separation - specify GGD or GCS. Motor control centres with many starters - specify GCK. Installations where a feeder must be changed without a shutdown - specify a withdrawable board.
TECHNICAL DATA - XL-21 Power Distribution Cabinet
Compliance: IEC 61439-1, IEC 61439-2, IEC 60529, GB 7251.1
| Category | Item | Specification |
| Electrical Ratings | Rated operational voltage (Ue) | 400 V / 415 V AC (380 V available) |
| Rated insulation voltage (Ui) | 690 V | |
| Rated impulse withstand voltage (Uimp) | 8 kV | |
| Rated frequency | 50 Hz / 60 Hz | |
| Rated current | 100 / 160 / 250 / 400 / 630 A | |
| Rated short-time withstand current (Icw) | 15 / 25 / 30 kA for 1 s | |
| Rated peak withstand current (Ipk) | 30 / 52.5 / 63 kA | |
| Rated diversity factor | 0.8 | |
| Pollution degree | 3 | |
| Number of phases | 3P+N+PE | |
| Enclosure Construction | Frame | Bolted or welded, cold-rolled steel |
| Sheet thickness | Frame 2.0 mm; doors and panels 1.5 mm; mounting plate 2.0 mm | |
| Surface treatment | Phosphate pre-treatment, electrostatic powder coating 60–80 µm | |
| Standard colour | RAL 7035 light grey; custom RAL to order | |
| Salt spray resistance | 500 h standard; 1000 h coastal specification | |
| Door | Single or double front door, concealed hinge, 120° opening | |
| Lock | 3-point latch with handle, keyed or padlockable | |
| Rear access | Fixed panel standard; hinged rear door optional | |
| Gland plate | Removable, bottom entry standard; top entry optional | |
| Plinth | 100 mm or 200 mm | |
| Earthing | Continuous PE bar, door bonded by flexible copper braid | |
| Degree of Protection | Indoor standard | IP30 |
| Indoor gasketed | IP54 | |
| Outdoor with canopy | IP55 | |
| Impact protection | IK08 | |
| Standard Dimensions (W×D×H, mm) | Standard sizes | 600×400×1700 | 700×400×1700 | 800×400×1700 | 600×600×2000 | 800×600×2000 | 1000×600×2000 | 800×800×2200 | 1000×800×2200 |
| Custom sizes | Manufactured to drawing | |
| Approximate weight | 120 – 350 kg depending on size and fit-out | |
| Internal Arrangement | Mounting plate | Adjustable depth, galvanised or powder coated |
| Busbar | Electrolytic copper where fitted, supported on insulators and holders | |
| Internal separation | Form 1 or Form 2 (Form 3a on request) | |
| Wiring | PVC insulated copper, colour coded, ferruled and labelled | |
| Trunking | Slotted PVC wiring duct | |
| Service Conditions | Ambient temperature | -5 °C to +40 °C per IEC; verified to +55 °C with derating |
| Relative humidity | 50% at +40 °C, up to 90% at +20 °C | |
| Altitude | Up to 2000 m | |
| Installation | Indoor, or outdoor with canopy and ventilation |
OPTIONS
IP55 outdoor version with sunshade canopy | ventilation louvres with dust filter
Thermostatic fan set | anti-condensation heater | internal LED light
Window door for meters | capacitor bank compartment | cable entry gland plate
Tropicalised coating | cold climate version for Russia and CIS
Stainless steel enclosure for coastal and process sites
CKD kit and drawings for local assembly
WE SELL THE CAPABILITY, NOT JUST THE BOX
Most suppliers quote you a finished cabinet. We would rather make you the factory. Over 15 years we have equipped more than 300 partner enterprises in 72 countries to build their own low voltage switchgear locally, using our drawings, our components and our training. If you only want finished cabinets we will supply those too - but read what the alternative saves first.
1. TECHNICAL PACKAGE - GA DRAWINGS AND ENGINEERING
Complete general arrangement drawings, busbar layouts, single-line and schematic diagrams, drilling and cut-out templates, torque tables, BOM with part numbers, and assembly instructions. Drawings are issued in DWG and PDF, dimensioned in millimetres, and revised free of charge for your project variations. Your engineer works from a design that has already been verified, instead of reverse-engineering a competitor's board.
2. COMPONENT SUPPLY - CKD KIT FROM 2,000+ SELF-DEVELOPED PARTS
We manufacture over 2,000 of our own switchgear components and 38+ patents sit behind them. That matters because the parts that decide whether a cabinet passes inspection - busbar supports, insulators, drawer isolating contacts, racking mechanisms, interlocks - are not reliably available on the open market at consistent quality. You buy the kit flat-packed, add local sheet metal and labour, and the freight bill collapses. A South African distributor cut total cost by 40% doing exactly this; logistics alone had been eating 25% of their landed cost.
3. LEAD TIME
Building locally from a kit removes the ocean freight leg from your delivery promise. The same South African partner went from a 3-month lead time to 5 weeks. In markets where the contractor pays liquidated damages for late energisation, that is often worth more than the price difference.
4. TRAINING AND ASSEMBLY SUPPORT
On-site or online training for your assembly team: frame build, busbar bracing and torquing, drawer alignment, Form separation, wiring discipline, routine testing. We also run remote support during your first production batches. An Indonesian client used this route to enter the high-end panel market within 4 months and lifted margin by 35%.
5. OEM AND ODM - YOUR BRAND ON THE DOOR
Nameplate, colour, layout, packaging and documentation to your brand. Non-disclosure agreements and territory protection for distributors who are developing a market. You sell as a manufacturer, not as a re-seller.
6. CERTIFICATION AND SUBMITTAL SUPPORT
Design verification evidence to IEC 61439-1 and IEC 61439-2, type-test reports, material certificates and QC records for your tender submittals. Country routes supported: EAC under TR CU 004/2011 and TR CU 020/2011 for the EAEU, CE under LVD 2014/35/EU and EMC 2014/30/EU to EN 61439 for the EU, SASO SABER PCoC plus per-shipment SCoC for Saudi Arabia, SONCAP for Nigeria under HS 8536, KEBS PVoC Routes A/B/C for Kenya, and utility submittals for DEWA, KAHRAMAA, MEW, Oman DCRP and ICIGI.
7. AFTER-SALES AND SPARES
Technical response within 24 hours. Spare parts kept to the same drawing revision for the life of the design, so a drawer bought in year one still fits a cabinet built in year five. Warranty 12 months from commissioning or 18 months from shipment.
8. COMMERCIAL TERMS
FOB, CFR, CIF, DDP and Ex-Works. Consolidated container loading with mixed products. Trade Assurance, T/T and L/C at sight. Sample and pilot batch orders accepted before you commit to volume.
QUALITY CONTROL - VERIFIED ASSEMBLY, NOT A FOLDER OF COMPONENT CERTIFICATES
The most common reason a low voltage board is rejected on site is not a faulty breaker. It is that the assembly itself was never verified. IEC 61439 verifies the complete assembly - enclosure, busbar system, internal separation, temperature rise, short-circuit withstand and IP rating, together. A cabinet fitted with certified devices is not automatically a verified assembly, and inspectors in our markets increasingly know the difference.
DESIGN VERIFICATION - IEC 61439-1 AND -2
Strength of materials and parts, degree of protection, clearance and creepage distances, protection against electric shock and integrity of the protective circuit, incorporation of switching devices and components, internal electrical circuits and connections, terminals for external conductors, dielectric properties, temperature-rise limits, short-circuit withstand strength, and electromagnetic compatibility. Verification evidence is issued for the assembly as built and supplied for your tender submittal.
ROUTINE VERIFICATION - EVERY CABINET, BEFORE IT SHIPS
1. Enclosure inspection - dimensions, squareness, door alignment and gap, panel flatness, weld and bolt integrity.
2. Coating - pre-treatment, powder coat thickness measured, adhesion cross-hatch test, RAL colour verification, salt spray on batch samples.
3. Busbar system - phase sequence and colour identification, bar section and spacing against drawing, insulator and holder installation, every joint torqued to specification and marked.
4. Protective circuit continuity - PE bar and door bonding tested at the specified test current, resistance recorded.
5. Wiring - against the schematic, terminal tightness, ferrule and labelling check, bending radius and segregation of power and control.
6. Dielectric test - power-frequency withstand for one minute at the rated test voltage, insulation resistance measured and recorded.
7. Functional test - protection, interlocks, indication, metering, control logic and, where fitted, communication.
8. Degree of protection - gasket continuity, cable gland plates, door seal compression; IP verification per the stated rating.
9. Final inspection - nameplate data, circuit labelling, drawing pack, spare parts, tidiness, packing.
WHAT YOU RECEIVE
Routine test certificate, design verification evidence, inspection checklist with the tester's mark, material and coating certificates, device certificates, GA and schematic drawings as-built, and the operation and maintenance manual.
INDEPENDENT AND WITNESSED TESTING
Witnessed factory acceptance testing available for EPC and utility projects; this is a standard requirement on Saudi SEC work. Third-party inspection by SGS, BV, TUV or Intertek accepted and coordinated at the buyer's request. Pre-shipment inspection reports with photographs are issued for every order.
MANAGEMENT SYSTEM
ISO 9001 quality management. Incoming material inspection with certificate traceability, in-process inspection at frame, busbar and wiring stages, and final inspection before packing. Non-conformances are recorded, root-caused and closed - a discipline that matters more than any single certificate.
