Standard 24-core flame-retardant optical cable

Flame-retardant 24-core optical cables are available in both singlemode and multimode variants, featuring fire-resistant and armored constructions suitable for indoor and outdoor installations.

Key Features and Specifications

Fiber Types: Available in OM1, OM3, OM4 multimode and OS2 singlemode configurations, supporting high-speed data transmission over long distances (Draka FireTuf, Webro). Core Count: 24-core options are standard, with loose tube or stranded loose tube constructions for flexibility and fiber protection. Fire Resistance: Compliant with IEC 60331-25 for fire resistance and IEC 60332-2-3-24C for flame retardancy, ensuring circuit integrity during fire events.

Sheath Material: Options include LSZH (Low Smoke Zero Halogen) for indoor use and flame-retardant PE for outdoor or direct burial applications. Mechanical Protection: Armored variants feature steel tape armor or double sheaths for crush resistance, rodent protection, and durability in harsh environments. Waterproofing: Many cables include water-blocking materials and filled loose tubes to prevent moisture ingress, suitable for tunnels, metro lines, and outdoor deployments.

Bend Insensitivity: Some multimode cables incorporate MaxCap BendBright™ technology, allowing tight bends without signal loss.

Typical Applications

Life Safety Systems: Fire alarms, voice evacuation systems, and emergency communication networks. Public Infrastructure: Metro lines, tunnels, and public buildings where continuous operation during fire is critical. Telecom and Data Backbones: Long-haul fiber optic networks, broadband, campus networks, and outdoor installations requiring high durability and fire safety.

Installation Considerations

Indoor vs Outdoor: LSZH jackets are preferred indoors for low smoke emission, while PE jackets with armor are suitable for outdoor, aerial, or direct burial installations. Environmental Resistance: Armored and water-blocked designs protect against mechanical stress, rodents, UV exposure, and moisture. Compliance: Ensure the selected cable meets local fire safety codes and international standards for flame retardancy and fire resistance.

Flame-retardant 24-core optical cables provide a robust, fire-safe solution for high-speed data transmission in critical infrastructure, combining mechanical protection, fire compliance, and long-term reliability.