BS 6724 Cable | 0.6/1kV Copper SWA LSZH Cable
The BS 6724 copper SWA LSZH cable is a premier low smoke zero halogen power and auxiliary fixed wiring solution engineered for high-safety installations. Rated at 0.6/1kV, this BASEC-approved cable provides exceptional performance in power networks where fire, smoke emission, and toxic fumes pose critical risks to life and equipment
What is BS 6724 Copper SWA LSZH Cable?
BS 6724 is a multi-core low smoke zero halogen (LSZH) power and auxiliary fixed wiring cable armored with steel wire armour (SWA). It is specifically designed for installations where fire safety, minimal smoke emission, and zero toxic fume release are critical to protecting human life and sensitive equipment. Operating at a voltage rating of 0.6/1kV, it delivers exceptional durability and electrical reliability across complex power networks.
Cable Construction
- Conductor: Class 2 stranded plain copper conductor conforming to EN/IEC 60228.
- Insulation: Cross-Linked Polyethylene (XLPE) ensuring high thermal and electrical performance.
- Bedding: Low Smoke Zero Halogen (LSZH) inner bedding layer.
- Armour: Steel Wire Armour (SWA) providing robust mechanical protection against external impact.
- Sheath: Low Smoke Zero Halogen (LSZH) outer sheath, UV resistant and flame retardant.
Typical Applications
- Fixed power and auxiliary wiring in industrial and commercial power networks.
- Underground installations, direct burial, and outdoor cable ducting systems.
- Indoor building environments where fire safety and low smoke emission are mandatory.
- Public spaces, tunnels, and infrastructure projects with high potential threat to life and equipment.
Specifications & Dimensions
The BS 6724 SWA LSZH cable is available in diverse core configurations (from 2-core up to 37-core) with cross-sectional areas ranging from 1.5mm² to 300mm². It operates efficiently within fixed installation temperature ranges from -20°C to +90°C.
| No. of Cores | Nominal Cross Sectional Area (mm²) | Nominal Thickness of Insulation (mm) | Nominal Diameter - Under Armour (mm) | Nominal Diameter - Overall (mm) | Nominal Weight (kg/km) |
| 2 | 1.5 | 0.6 | 7.3 | 12.1 | 302 |
| 2 | 2.5 | 0.7 | 8.5 | 13.6 | 346 |
| 2 | 4 | 0.7 | 9.4 | 14.7 | 410 |
| 2 | 6 | 0.7 | 10.5 | 15.9 | 499 |
| 2 | 10 | 0.7 | 12.3 | 18 | 648 |
| 2 | 16 | 0.7 | 14.3 | 20.4 | 978 |
| 2 | 25 | 0.9 | 14.7 | 20.4 | 1290 |
| 2 | 35 | 0.9 | 16.8 | 23.3 | 1500 |
| 2 | 50 | 1 | 19 | 25.8 | 1890 |
| 2 | 70 | 1.1 | 22 | 29 | 2450 |
| 2 | 95 | 1.1 | 25.1 | 33.1 | 3300 |
| 2 | 120 | 1.2 | 31.1 | 39.3 | 4020 |
| 2 | 150 | 1.4 | 30.9 | 39.3 | 4750 |
| 3 | 1.5 | 0.6 | 7.8 | 12.6 | 330 |
| 3 | 2.5 | 0.7 | 9.2 | 14.1 | 390 |
| 3 | 4 | 0.7 | 10 | 15.3 | 464 |
| 3 | 6 | 0.7 | 11.2 | 16.6 | 568 |
| 3 | 10 | 0.7 | 13.1 | 19.5 | 866 |
| 3 | 16 | 0.7 | 15.3 | 21.6 | 1152 |
| 3 | 25 | 0.9 | 18.9 | 23.6 | 1800 |
| 3 | 35 | 0.9 | 21.3 | 25.7 | 2230 |
| 3 | 50 | 1 | 21.7 | 28.5 | 2490 |
| 3 | 70 | 1.1 | 25.2 | 32.2 | 3290 |
| 3 | 95 | 1.1 | 28.8 | 37 | 4440 |
| 3 | 120 | 1.2 | 32 | 40.4 | 5470 |
| 3 | 150 | 1.4 | 35.9 | 45.5 | 6930 |
| 4 | 1.5 | 0.6 | 8.5 | 13.5 | 365 |
| 4 | 2.5 | 0.7 | 9.9 | 15 | 438 |
| 4 | 4 | 0.7 | 11 | 16.4 | 532 |
| 4 | 6 | 0.7 | 12.3 | 18.7 | 764 |
| 4 | 10 | 0.7 | 14.5 | 21.1 | 1013 |
| 4 | 16 | 0.7 | 17 | 23.4 | 1360 |
| 4 | 25 | 0.9 | 21 | 26.1 | 2160 |
| 4 | 35 | 0.9 | 23.6 | 28.6 | 2690 |
| 4 | 50 | 1 | 25 | 32 | 3130 |
| 4 | 70 | 1.1 | 29.5 | 37.7 | 4500 |
| 4 | 95 | 1.1 | 33.3 | 41.7 | 5600 |
| 4 | 120 | 1.2 | 37.5 | 47.1 | 7400 |
| 4 | 150 | 1.4 | 41.6 | 51.4 | 8780 |
| 4 | 185 | 1.6 | 46.4 | 56.6 | 10630 |
| 4 | 240 | 1.7 | 52.6 | 63 | 13390 |
| 4 | 300 | 1.8 | 56.3 | 63.6 | 14998 |
| 5 | 1.5 | 0.6 | 9.7 | 14.3 | 410 |
| 5 | 2.5 | 0.7 | 11.7 | 16.3 | 470 |
| 5 | 4 | 0.7 | 13 | 17.8 | 710 |
| 5 | 6 | 0.7 | 14.5 | 20 | 876 |
| 5 | 10 | 0.7 | 17.2 | 22.9 | 1165 |
| 5 | 16 | 0.7 | 20 | 26.6 | 1742 |
| 5 | 25 | 0.9 | 24.7 | 31.5 | 2323 |
| 5 | 35 | 0.9 | 27.8 | 34.8 | 2932 |
| 5 | 50 | 1 | 32.4 | 40.4 | 4192 |
| 5 | 70 | 1.1 | 35.8 | 43 | 5500 |
| 5 | 95 | 1.1 | 42.1 | 49 | 7145 |
| 7 | 1.5 | 0.6 | 10.2 | 15.2 | 470 |
| 7 | 2.5 | 0.7 | 12.3 | 17.1 | 600 |
| 12 | 1.5 | 0.6 | 13.7 | 19.4 | 780 |
| 12 | 2.5 | 0.7 | 16.3 | 22.4 | 1000 |
| 19 | 1.5 | 0.6 | 16.2 | 22.2 | 1000 |
| 19 | 2.5 | 0.7 | 19.9 | 26.6 | 1540 |
| 27 | 1.5 | 0.6 | 20 | 26.7 | 1500 |
| 27 | 2.5 | 0.7 | 24 | 30.7 | 1950 |
| 37 | 1.5 | 0.6 | 22.3 | 29 | 1800 |
| 37 | 2.5 | 0.7 | 26.9 | 33.8 | 2350 |
International Standards
- Design Standard: BS 6724
- Conductor Standard: EN/IEC 60228
- Construction Standard: EN/IEC 60502-1
- Fire & Smoke Performance: Low Smoke Zero Halogen to EN/IEC 60754-1/2, EN/IEC 61034-2
- Flame Retardancy: EN/IEC 60332-1-2, EN/IEC 60332-3-24 Cat C, EN 50267-2-1
- Third-Party Accreditation: BASEC Approved
Frequently Asked Questions
Q: What does LSZH stand for in BS 6724 cables?
A: LSZH stands for Low Smoke Zero Halogen. In the event of a fire, this material emits minimal smoke and virtually no toxic or corrosive halogen gases, safeguarding human safety and equipment.
Q: Is BS 6724 cable approved by independent testing authorities?
A: Yes, Huadong Cable supplies BASEC approved products that are rigorously tested and certified by The British Approvals Service for Cables.
Q: What is the maximum operating temperature for the conductor?
A: The maximum continuous conductor operating temperature for fixed installations is +90°C.
BS 6724 Copper SWA LSZH Cable Why Choose Huadong Cable
Huadong Cable Group delivers world-class industrial cabling solutions backed by rigorous ISO/IEC 17025 testing laboratories and full compliance with international standards such as CPR, RoHS, and REACH. When you partner with us for your BS 6724 SWA LSZH cable requirements, you gain direct access to certified manufacturing quality, strict quality control regimes, and dedicated global export support tailored for large-scale B2B infrastructure projects.
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Established in 1999, Huadong Cable Group is a national high-tech enterprise and an integrated manufacturer specializing in advanced cable R&D, production, and global trade. Deeply integrated into global infrastructure and the Belt and Road Initiative, Huadong Cable Group exports to over 130 countries and regions worldwide, including Europe, South America, North America, the Middle East, Africa, Asia, and Oceania.
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Our comprehensive product includes high-quality power cables, aerial insulated cables (ABC cables), marine cables, flame-retardant & fire-resistant cables, and low-smoke halogen-free (LSZH) cables. We also specialize in rubber cables, high-temperature resistant cables, instrument & control cables, solar/photovoltaic cables, and customized wiring solutions for diverse industrial applications.
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