Tratos® CW1858 COF 315 – ADSS – Aerial UK telecom


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

Tratos manufactures a range of All Dielectric Self Supporting (ADSS) overhead fibre cables (COF315) for use in the Openreach Overhead access network.

Tratos has designed these cables specifically for use below 33kV power lines.

These cables are of multi element construction containing 36 or 48 single mode fibres. These 36 and 38 fibre cables are manufactured in separate water blocked tubes containing 12 colour coded fibres. The required number of tubes plus dummy fillers are assembled together helically around a single strength member with water blocking filling in the interstices. The design parameters being specially chosen to ensure that the cable is neutrally balanced along its central axis. The fibre assembly is covered with a high electrical grade, anti-tracking, Black HDPE sheath. The robust abrasion resistant HDPE sheath used by Tratos ensures outstanding pliability, electrical and mechanical protection. Two ripcords are inserted under the sheath to aid stripping and terminating of the cable. The cable sheath has two equally spaced, axial yellow stripes, to identify it

The single mode fibres used by Tratos to manufacture these cables meet or exceed the requirements of Category 2 fibres as defined in BT Specification CW 1505. The transmission application for these cables are for systems operating in the wavelength range of 1260nm to 1625nm

Tratos useS Lucent OFS and Prysmian fibres to manufacture the Optical Fibre Cables supplied to BT.

These ADSS lightweight COF 315 cables are specially designed for overhead use and meet or exceed the requirements of CW 1858.

No metallic materials are used in the construction of these cables.

The cable meets or exceeds the Operational Requirements specified in BT Specification CW1500-11.

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 1858 Design guide
  • CW1179
  • CW 1205
  • CW 1402
  • CW 1500-2
  • CW 1500-7
  • CW 1500-11
  • CW 1505
  • CW 2000
  • RC 9307


ITU-T 657A1

Contact us:

Tel: +44 20 3148 5178


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


This cable is currently deployed in overhead span lengths in a maximum of 68m and is suitable for installation below 33kv power lines. Although designed primarily for use overhead these cables can also be installed underground in ducts.


  • Central Strength member
  • Single mode Category 2 fibre
  • Water blocked tube
  • WB Wrapping
  • Rip Cord
  • High electrical grade HD PE Outer Sheath


Technical Specifications

  • Suitable for installation below 33kV power lines.
  • These cables are for use in transmission systems operating over the wavelength range 1260nm to 1625nm.
  • Operating temperatures between -20°C and +60°C.
  • The outside diameter of the cable shell is 7.00+0.10mm.
  • The load to break of the cable is 1350 Newtons minimum and 4000 Newtons maximum with an elastic limit greater than 1200 Newtons.

Contact us

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

Other News

Our website uses cookies and thereby collects information about your visit to improve our website (by analyzing), show you Social Media content and relevant advertisements. Please see our cookies page for further details or agree by clicking the 'Accept' button.

Cookie settings

Below you can choose which kind of cookies you allow on this website. Click on the "Save cookie settings" button to apply your choice.

FunctionalOur website uses functional cookies. These cookies are necessary to let our website work.

AnalyticalOur website uses analytical cookies to make it possible to analyze our website and optimize for the purpose of a.o. the usability.

Social mediaOur website places social media cookies to show you 3rd party content like YouTube and FaceBook. These cookies may track your personal data.

AdvertisingOur website places advertising cookies to show you 3rd party advertisements based on your interests. These cookies may track your personal data.

OtherOur website places 3rd party cookies from other 3rd party services which aren't Analytical, Social media or Advertising.