Duct Cable – 24F – G657A1 – Singlemode – Per Metre

Duct Cable – 24F – G657A1 – Singlemode – Per Metre

The Duct Cable – 24F – G657A1 – Singlemode – Per Metre is a high-performance loose tube fibre optic cable designed for duct installations across telecommunications, broadband and FTTX networks. Manufactured with 24 bend-resistant G.657A1 single-mode fibres, it delivers ultra-low attenuation and exceptional optical performance, making it ideal for fibre access, distribution and backbone network applications.

Its water-blocked loose tube construction incorporates gel-filled tubes, water-swellable yarn and a central FRP strength member to provide outstanding protection against moisture ingress and mechanical stress. The rugged HDPE anti-rodent outer sheath offers excellent environmental resistance, ensuring reliable long-term performance in underground duct installations.

Optimised for traditional blowing and pulling installation methods, the cable combines excellent tensile strength, high crush resistance and colour-coded fibres for simplified identification during splicing and termination. It is an ideal solution for telecom operators, broadband providers and infrastructure contractors requiring dependable fibre connectivity.

Key Features:

• 24-fibre G.657A1 bend-resistant single-mode cable

• Loose tube construction for duct installations

• Ultra-low attenuation for high-speed optical networks

• Water-blocked design with gel-filled loose tubes

• Water-swellable yarn prevents moisture ingress

• HDPE anti-rodent outer sheath

• FRP central strength member

• Colour-coded fibres for simplified splicing and termination

• Suitable for blowing or pulling into ducts

• Sold per metre

Technical Specifications:

• Product Type: Loose Tube Duct Fibre Optic Cable

• Fibre Count: 24F

• Fibre Type: ITU-T G.657A1 Singlemode

• Cable Diameter: 8.5 ±0.5mm

• Outer Sheath: 1.1mm HDPE (Black)

• Sheath Protection: Anti-Rodent

• Central Strength Member: FRP Rod

• Cable Weight: 55 ±10kg/km

• Tensile Strength: 2000N (IEC 60794-1-21-E1)

• Crush Resistance: 2000N/100mm (IEC 60794-1-21-E3)

• Impact Resistance: 10Nm (IEC 60794-1-21-E4)

• Minimum Bend Radius: 20 × Cable Diameter

• Water Penetration: 1m Water Head, 3m Sample, 24 Hours

• Operating Temperature: -10°C to +85°C

• Storage Temperature: -10°C to +85°C

• Optical Attenuation:

  • ≤0.40dB/km @1270nm

  • ≤0.35dB/km @1310nm

  • ≤0.35dB/km @1383nm

  • ≤0.24dB/km @1490nm

  • ≤0.21dB/km @1550nm

  • ≤0.24dB/km @1625nm

• Sold Per: Metre

Applications:

• FTTH deployments

• FTTX access networks

• Telecommunications infrastructure

• Broadband network roll-outs

• Underground duct installations

• Metro fibre networks

• Campus fibre infrastructure

• Data centre interconnects

• Distribution and feeder fibre networks

• Utility communications infrastructure