Draka Saffire 6242B Flat Twin Core Zero Halogen Low Smoke Cables
Low Smoke Zero Halogen Cables
Draka Saffire 6242B
Prysmian Draka Saffire 6242B is a flat, twin core zero halogen low smoke power cable ideal for use in non-emergency systems within public buildings where a reduction in the volume of smoke and acid gas emissions is beneficial.
Draka Saffire 6242B cable is designed for installation either clipped direct, onto a cable tray or in a wire basket, buried within plaster or embedded into walls.
This is a zero halogen, low smoke and flame retardant alternative to standard PVC cable.
âž¡ See also BS6724 | 6491B | Railsure LU Cables
Draka Saffire 6242B Cable
Technical Specification
 | Cable Construction |
Manufacturing Standard | BS 7211 |
Conductors | Solid or stranded plain annealed copper wire (Class 1 or Class 2) to BS EN 60228 |
CPC | Un-insulated copper circuit protective conductor (CPC) |
Insulation | XLPE |
Sheath | Zero halogen, low smoke (0HLS) |
Core Colours | Two Core: Brown and blue Three Core: Brown, black and grey |
Sheath Colour | Black |
 | Physical Characteristics |
Circuit Integrity | 300/500V |
Maximum Conductor Temperature | 90ºC Note: Where a conductor operates at a temperature exceeding 70ºC it shall be ascertained that the equipment connected to the conductor is suitable for the conductor operating temperature (see regulation 512-1-5 of BS7671, the 17th Edition of IEE Wiring Regulations) |
Minimum Bending Radius | 4 x overall diameter of cable (minor axis) |
Current Rating | Refers to table 4D5 in BS7671 |
Performance Characteristics |
|
Smoke Emission | BS EN 61034-2 |
Acid Gas Emission | BS EN 50267-2-1 |
Flame Propagation | BS EN 60332-1-2, BS EN 60332-3-24 |
Draka Saffire 6242B – Flat, Twin Core Zero Halogen, Low Smoke (OHLS®)
Technical Data
The following table provides a brief overview of the cable construction dimensions for the 6242B type cable manufactured by Draka as part of the Saffire range of low smoke zero halogen cables – for fire resistant cables consult the Draka Firetuf range.
Nominal Area of Conductor (mm²) | Insulation Thickness (mm) | Sheath Thickness (mm) | Nominal Area of CPC (mm) | Approx. Cable Weight (kg/km) | Approx. Overall Dimensions (d x D) (mm) |
6242BH 2C + CPC | |||||
1 | 0.6 | 0.9 | 1 | 70 | 4.5 x 8.2 |
1.5 | 0.7 | 0.9 | 1 | 80 | 4.7 x 8.6 |
2.5 | 0.8 | 1.0 | 1.5 | 110 | 5.3 x 9.9 |
4* | 0.8 | 1.0 | 1.5 | 150 | 6.1 x 11.4 |
6* | 0.8 | 1.1 | 2.5 | 210 | 6.8 x 13.1 |
10* | 1.0 | 1.2 | 4* | 220 | 8.4 x 16.8 |
16* | 1.0 | 1.3 | 6* | 475 | 9.6 x 19.5 |
6243BH 3C + CPC | |||||
1.5 | 0.7 | 0.9 | 1 | 110 | 4.7 x 11.4 |
2.5 | 0.7 | 1 | 1 | 150 | 5.3 x 12.9 |
*Class 2, stranded copper conductor/wire

LU London Underground Duct Seal | protecting zero halogen cable installations against water ingress, gas migration and fire spread

London Underground LU Rail Cables, Glands & Cleats
Cable Accessories for Low Smoke Zero Halogen Cables
To maintain the circuit integrity of low smoke zero halogen (LSZH) cables, T&D distribute a complete range of Prysmian cable accessories for LSZH cables including cable glands, cable cleats, duct sealing and joints.
âž¡ See the complete range of Prysmian cable accessories for low, medium and high voltage cables – this includes MV HVÂ joints, terminations and connectors for power systems at 11kV, 33kV and 66kV.