Duct Cable – 12F – G657A1 – Singlemode – Per Metre

Duct Cable – 12F – G657A1 – Singlemode – Per Metre

The Duct Cable – 12F – G657A1 – Singlemode – Per Metre is a high-performance loose tube fibre optic cable designed for duct installations across telecommunications, broadband and FTTX networks. Engineered with 12 bend-resistant G.657A1 single-mode fibres, it delivers ultra-low attenuation and reliable high-speed data transmission, making it ideal for modern fibre infrastructure deployments.

The cable features gel-filled loose tubes, water-swellable yarn and a central FRP strength member, providing excellent protection against moisture ingress and mechanical stress. Its rugged HDPE anti-rodent outer sheath offers exceptional durability and long service life, ensuring reliable performance in challenging underground environments.

Designed for conventional duct pulling installations, the cable combines excellent tensile strength with colour-coded fibres for simplified identification, splicing and termination, making it suitable for both new network builds and infrastructure upgrades.

Key Features:

• 12-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 easy identification

• High tensile and crush resistance

• Supplied per metre

Technical Specifications:

• Product Type: Loose Tube Duct Fibre Optic Cable

• Fibre Count: 12F

• 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 network installations

• Underground duct networks

• Telecommunications infrastructure

• Broadband backbone networks

• Metro fibre networks

• Campus fibre installations

• Data centre interconnects

• Utility communications

• Long-distance fibre links