Fire-resistant optical cable

Fire-resistant optical cables are designed to maintain data transmission and operational integrity during fire, using specialized materials and construction to meet stringent safety standards.Key Features

Fire-resistant optical cables are engineered to continue functioning under extreme heat and flame exposure, ensuring uninterrupted communication in critical systems such as fire alarms, voice evacuation, and emergency networks . They typically feature:

• LSZH (Low Smoke Zero Halogen) sheaths to reduce toxic smoke and halogen emissions during fire .
• Steel wire or corrugated steel tape armor for mechanical strength and protection against environmental hazards .
• Gel-filled loose tubes or central strength members to protect fibers from mechanical stress and maintain optical integrity .
• UV-stabilized and weather-resistant outer jackets for outdoor exposure .

Fire-Resistance Standards

These cables comply with international fire safety standards, including:

• CPR Euroclass B2ca, Cca, Dca for European construction regulations .
• FE180 for continuous operation under fire conditions .
• IEC 60331-25 for circuit integrity during fire .
• UL flame-listed certification for indoor and outdoor emergency systems .

Applications

Fire-resistant optical cables are widely used in environments where maintaining communication during fire is critical:

• Tunnels, metro lines, and railway networks for safety and signaling .
• Hospitals and airports for emergency communication systems .
• Industrial plants and data centers to protect operational continuity .
• Public buildings and voice alarm systems to ensure evacuation and alert systems remain functional .

Performance Characteristics

• Continuous data transmission during fire, preventing operational collapse .
• Low smoke and zero halogen emissions to protect personnel and equipment .
• Mechanical durability against bending, impact, and environmental stress .
• High-speed data transmission over long distances with minimal signal loss .
• Flexible deployment for indoor/outdoor routes, vertical shafts, and tight bends .

Notable Products

• ETK Kablo B2ca fire-resistant fiber optic cables: Maintain optical integrity under extreme heat, low smoke, zero halogen, suitable for tunnels, hospitals, and industrial plants .
• Draka FireTuf cables: OM1, OM3, OM4 multimode and OS2 singlemode, compliant with IEC 60331-25 and IEC 60332-2-3-24C, ideal for fire alarm and voice evacuation systems .
• Lifeline™ QFCI cables by Prysmian: UL flame-listed, functional for over three hours at 1000ºC, halogen-free, suitable for indoor and outdoor emergency systems .
• Optral CPR optical cables: Euroclass Dca, Cca, B2ca classifications, certified by UL, Bureau Veritas, and DNV . Fire-resistant optical cables are essential for ensuring safety, operational continuity, and compliance with international fire standards, making them a critical component in modern infrastructure and emergency systems.