Telecommunication Cables / Optical Fibres Cables / UK Telecom Fibre Optic Cables

These non-metallic loose tube cables are specially designed and manufactured for installation within buildings having excellent fire performance having a CPR Reaction to Fire. Performance of Cca-s1b,d1,a2. 

These COF 950 cables contain 12 to 144 single mode fibres within a non-pressurised Yellow Low Smoke Zero Halogen (LSZH) sheath. Twelve colour coded fibres are contained within each dry tube, the required number of colour coded tubes plus fillers where required are assembled helically around a non-metallic central strength member, the design being specially chosen to ensure that the cable is neutrally balanced along its central axis. The individual fibre and tube colour identification scheme used is in accordance with CW 1855.

The assembly of tubes and fillers are wrapped in a binder tape, two rip cords are inserted, diametrically opposite, under the Yellow LSZH sheath to aid stripping and termination of the cable. The robust LSZH sheath used by Tratos meets or exceeds the requirements of BS EN 50290-2-27 having a minimum tensile strength of 11.5 MPa it provides outstanding pliability and protection.

Tratos has developed this cable to have the optimum balance of properties, fire performance combined with toughness and a smooth, low coefficient of friction, surface, to ease installation and prevent jamming.

The single-mode (9/125µm) optical fibre (ITU-T G657A1) used to manufacture these cables for BT met or exceed the requirements for Category 2 as specified in CW 1505 for systems operating in the wavelength range of 1260nm to 1625nm.

Tratos uses OFS and Prysmian fibres to manufacture the single mode Optical Fibre Cables supplied to BT.

These cables meet or exceed the requirements of CW 1855.

All of the polymeric materials used in the construction of cables for BT meet or exceed the requirements of BT Specification CW1500-7 and are RoSH compliant.


  • CW 1855 Design guide
  • BT Specification CW 1205
  • BT Specification CW 1404
  • BT Specification CW 1500-2
  • BT Specification CW 1500-7
  • BT Specification CW 1505
  • BT Specification CW 2000


  • BS EN 50290-2-27
  • BS EN 50575


  • ITU-T G657A1

Contact us:

Tel: +44 20 3148 5178


Please don’t hesitate to contact us if you need additional information about our products.


 Company Profile


This range of COF 730 cables are intended for installation into underground ducts using a direct pulling techniques with a rope or glass fibre rod and a cable type stocking grip. Attention is drawn to the need for special precautions to be taken when fitting the cable pulling stocking.


  • Non-metallic Central Strength Member
  • Single Mode (9/125µm) Optical Fibre 
  • Dry loose tube
  • Wrapping tape
  • Rip Cords
  • Yellow Zero Halogen Low Smoke Outer Sheath


Technical Specifications

  • CPR Reaction to Fire. Performance of Cca-s1b,d1,a2. 
  • Single Mode (9/125µm) Optical Fibre (ITU-T G657A1)
  • These cables are for use in transmission systems operating over the wavelength range 1260nm to 1625nm.
  • Maximum overall diameters
    • 12, 24, 36 and 48 fibres – 7.00 mm
    • 96 fibres – 9.00 mm
    • 144 fibres – 11.00 mm
  • Operating temperatures between -20°C and +60°C

Contact us

Please, don’t hesitate to contact us for additional information on our company or our products.

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