Description
The Excel Enbeam OM4 Distribution Fibre Cable is a tight-buffered 50/125µm multimode fibre optic cable designed for internal building and backbone network installations. Suitable for data centres, enterprise networks and structured cabling systems, it provides OM4 performance while maintaining backwards compatibility with OM3 infrastructure.
The cable construction uses between 4 and 24 colour-coded 900µm tight-buffered fibres, supported by aramid yarn and a central GFRP (Glass Fibre Reinforced Polymer) strength member. This design provides good tensile performance and simplifies termination compared to loose tube alternatives, making it well suited to indoor fibre distribution and riser applications.
A black LSZH (Low Smoke Zero Halogen) outer sheath helps minimise smoke and harmful emissions in the event of fire, while the cable's B2ca-s1a,d0,a1 CPR classification makes it suitable for installations requiring a high level of fire performance compliance.
Specification
| Type of tube | Loose tube |
| Fibre type | Multi mode 50/125 |
| Category | OM4 |
| Rodent resistant | Yes |
| Outer sheath material | Copolymer, thermoplastic (LSOH) |
| Outer sheath colour | Black |
| Flame retardant according to IEC 60332-1-2 | Yes |
| Low smoke (acc. IEC 61034-2) | Yes |
| 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 mm |
| Loose tube | Material: LSZH Diameter: 2.8 ± 0.1 mm (2-12 cores), 3.5 ± 0.20 mm (16-24 cores) Thickness: 0.35 ± 0.05 mm |
| Strength member | Material: E-glass Yarns |
| Sheath | Material: LSZH Thickness: Typical 1.1 mm |
| Cable diameter (± 0.3 mm) | 6.0 ± 0.20 mm (2-16 cores), 6.5 ± 0.20 mm (18-24 cores) |
| Cable weight | Approx. 40kg/km (2-16 cores), 45kg/km (18-24 cores) |
| Tensile strength | Installation: 660 N Working: 200 N |
| Crush resistance | Installation: 1000 N Working: 300 N |
| Torsion | Change of attenuation ≤ 0.30dB (MM fibre) |
| Temperature range | Installation -30°C to +60°C Working -30°C to +60°C Storage -40°C to +60°C |
| Bending radius | Short term: 20 x Diameter Long term: 10 x Diameter |
| Water penetration | No water on free end |
| Attenuation | @850 nm 3.5dB/km (maximum) @1300 nm 1.5dB/km (maximum) For any 1000 metre Max. 0.1dB/km |
| Overfilled modal bandwidth | @850 nm ≥3500 MHz/km @1300 nm ≥500 MHz/km |
| Effective modal bandwidth | @850 nm ≥4700 MHz/km |
| Core diameter | 50±2.5 µm |
| Core non-circularity | ≤5% |
| Cladding diameter | 125.0±1.0 µm |
| Cladding non-circularity | ≤1% |
| Core - cladding concentricity error | ≤1.5 µm |
| Primary coating diameter - uncoloured |
242±7 µm |
| Primary coating diameter - coloured | 250±15 µm |
| Primary coating non-circularity | ≤5% |
| Primary coating - cladding concentricity error | ≤12 µm |
| Group index of refraction | @850 nm 1.482 @1300 nm 1.47 |
| Proof stress level | ≥0.7(≈1% strain) Gpa |
| Typical average strip force | 1.7 N |
| Strip force (peak) | 1.3 ≤ Fpeak.strip ≤8.9 N |
| Numerical aperture | 0.200 ± 0.015 |
| Fibre bending loss R-7.5 mm | @850 nm ≤0.2dB @1300 nm ≤0.5dB |
| Fibre bending loss R-15 mm | @850 nm ≤0.1dB @1300 nm ≤ 0.3dB |
Downloads
| Datasheet | Download |
| Declaration of performance | Download |
| Certificate of conformity | Download |
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