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.
➡ 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.
➡ See the complete range of Prysmian cable accessories for low, medium and high voltage cables – this includes MV HV joints, terminations and connectors for power systems at 11kV, 33kV and 66kV.