The Critical Role of Certified Fire Alarm Cables in Sri Lankan Commercial Buildings
Fire safety remains one of the most critical concerns in Sri Lanka’s expanding commercial infrastructure. Whether it is a high-rise office building, shopping complex, hotel, hospital, or factory, the reliability of the fire alarm system can determine how effectively lives and property are protected during an emergency. At the core of that reliability are certified fire alarm cables; a component often overlooked but vital to the system’s performance.
Fire alarm cables and fire-resistant cables are specially engineered to continue functioning during fire exposure. Unlike standard cables, these are built to withstand extreme heat, prevent flame spread, and minimize the emission of toxic smoke; ensuring uninterrupted communication between detectors, alarms, and control panels when every second matters. Without certified and compliant cabling, even the most advanced fire alarm system can fail at the most crucial moment.
Micro Bytech International, as a trusted supplier in Sri Lanka, proudly offers Kastro Kablo (Turkey) & ERSE certified fire alarm and fire-resistant cable solutions. These cables meet internationally recognized standards; including but not limited to BS EN 50200, IEC 60331, andBS 6387 / CWZ ensuring compliance, reliability, and safety.

Technical Highlights & Fire-Resistance Specifications
- Temperature Resistance / Operating Range:
Typical certified fire-alarm/fire-resistant cables have an operating (ambient) temperature range from about –25 °C to +70 °C (or in some designs up to +90 °C) under normal conditions.
- Fire Endurance / Circuit Integrity under Fire:
Fire-resistant cables complying with BS 6387 and IEC 60331 may sustain circuit integrity under fire temperatures up to ~ 950 °C for durations ranging from 30 minutes up to 120 minutes (depending on the specification: e.g. PH30, PH60, PH120).
- Low Smoke & Zero Halogen (LSZH / LS0H) Insulation & Sheath:
Reduces toxic fumes and dense smoke, improving visibility and safety during evacuation. This is critical in enclosed spaces or public buildings.

- Shielded vs. Unshielded Construction Options:
Standard multicore LSZH fire-resistant cables; suitable for most conventional fire alarm and emergency-lighting circuits.

For installations where electromagnetic interference (EMI) is a concern, or where enhanced mechanical protection is required (e.g. in industrial environments), shielded or armored cable versions are available. Screening / armoring also supports higher durability and circuit integrity under harsh conditions. Many certified fire cables offer both options depending on site requirements.

Why These Specifications Matter
For consultants, engineers, builders, and facility owners, selecting the right fire alarm cable is more than a technical choice; it is a long-term investment in safety and compliance. By choosing cables that meet rigorous standards such as BS 7629-1, BS EN 50200, BS 6387, and IEC 60331, and by opting for LSZH constructions; you ensure that your building’s safety infrastructure is equipped with reliable, certified, and approved fire-safety cabling that performs when it matters the most.
With Micro Bytech International supplying Kastro Kablo (Turkey) & ERSE certified cables, you benefit from products engineered for challenging fire-safety demands, with technical data that support both everyday safety and emergency resilience.
Safety begins with quality; and quality begins with choosing the right components. With the right fire alarm cables, you’re not just installing a system; you’re protecting lives, assets, and the future of your building.

