In modern construction and industrial environments, safety is no longer just a recommendation — it’s a critical requirement. Whether you’re designing an airport, a hospital, a data center, or a high-rise building, choosing the right type of cable can mean the difference between life and death during an emergency.
That’s where LSZH (Low Smoke Zero Halogen) and Fire-Resistant Cables come in. These cables are specially designed to protect people, property, and sensitive equipment in the event of a fire.
Let’s break down what these cables are, how they differ, and where they are most essential.
1. What Are LSZH Cables?
LSZH (Low Smoke Zero Halogen) cables are made with materials that emit very little smoke and no toxic halogen gases when burned.
✅ Key Features:
- Produce low smoke during fire
- Emit non-toxic, non-corrosive gases
- Ideal for enclosed, public, or poorly ventilated spaces
- Environmentally friendly
Why It Matters:
During a fire, smoke inhalation and toxic fumes are the leading causes of death — not burns. LSZH cables significantly reduce that risk, making evacuation safer.
2. What Are Fire-Resistant Cables?
Fire-resistant cables are built to continue working even during a fire for a specified period. They ensure that critical systems (like emergency lighting, alarms, communication systems) remain operational during fire outbreaks.
✅ Key Features:
- Maintain circuit integrity in high heat
- Comply with standards like BS 6387, IEC 60331
- Withstand fire for 30, 60, or 120 minutes (depending on design)
- Typically include mica tape or other fire-protection layers
Why It Matters:
In emergencies, these cables ensure that vital systems don’t shut down, allowing people to safely evacuate and rescue teams to do their jobs effectively.
3. LSZH vs Fire-Resistant – What’s the Difference?
| Feature | LSZH Cables | Fire-Resistant Cables |
|---|---|---|
| Purpose | Reduce smoke and toxic gases | Maintain functionality during fire |
| Smoke Emission | Very low | May vary depending on insulation |
| Fire Survival | No (melts in fire) | Yes (operates during fire) |
| Best Use | Public spaces, data centers | Emergency circuits, fire alarms |
4. Where Are These Cables Used?
🔹 LSZH Cables Commonly Used In:
- Commercial buildings
- Hospitals
- Airports
- Schools
- Tunnels and metros
- Data centers
🔹 Fire-Resistant Cables Commonly Used In:
- Fire alarm systems
- Emergency lighting
- Ventilation and sprinkler systems
- Control panels for safety equipment
- Power supply to fire exits and lifts
5. Why Copper Line Cables Are the Safer Choice
At Copper Line Cables, we manufacture and supply LSZH and fire-resistant cables that comply with global safety standards and are tested for:
- Smoke density
- Flame spread
- Toxicity
- Fire survival duration
We help engineers, architects, and safety professionals build safer environments with the right cabling solutions.