Excel OS2 Singlemode 9/125 Tight Buffered B2ca-s1a,d0,a1 Internal Fibre Optic Cable Black (Per Metre)

This Excel OS2 singlemode tight buffered fibre cable is designed for internal and external installations where a CPR-compliant backbone is required. It is typically used in LAN and WAN links, building backbones and data centre cabling, and can be installed in trays, ducts and containment systems. The cable uses 9/125µm OS2 singlemode fibre with 900µm tight buffering (0.85mm nominal), allowing for straightforward stripping and termination on site. It is constructed with E-glass yarn strength members and up to 24 colour-coded fibres, supporting standard structured cabling practices. The black LSZH (LSOH) outer sheath is UV stabilised, low smoke and halogen-free, making it suitable for indoor use and external routes where limited environmental protection is required. CPR rated to Cca-s1a,d0,a1, it meets current fire performance requirements for public and commercial buildings. Compatible with standard OS2 connectors, splicing equipment and network hardware, this cable is suitable for structured cabling installations requiring a compliant, tight buffered solution for backbone and distribution networks. Specification Number of cores 4, 6, 8, 12, 16, 24 Type of tube Tight Fibre type Singlemode 9/125 Category OS2 Rodent resistant Yes Outer sheath material Copolymer, thermoplastic (LSOH) Outer sheath colour Black Reaction-to-fire class according to EN 13501-6 B2ca Smoke development class according to EN 13501-6 s1a Euro class flaming droplets/particles according to EN 13501-6 d0 Euro class acidity according to EN 13501-6 a1 Outer diameter approx. 6.5 mm Tensile strength Long term 300 N Short term 900 N Crush resistance Long term 300 N/m Short term 1000 N/m Temperature performance Installation -5⁰C to +70⁰C Operation -20⁰C to +70⁰C Storage -40⁰C to +70⁰C Peripheral strength member E glass Central strength member GFRP Outer sheath Thickness 1.0 mm (Nominal) Material LSZH Attenuation @1310 nm ≤ 0.40 dB/km @1550 nm ≤ 0.30 dB/km Bending radius Short term 20 x Diameter Long term 10 x Diameter Cladding diameter 125 ± 07 µm Cladding non-circularity ≤1% Coating Diameter 250 ± 15 µm Coating cladding concentricity error ≤ 12.5 Mode field diameter (MFD) 8.6-9.2 Downloads Datasheet Download Declaration of Performance Download Certificate of Conformity Download