When it comes to electrical wiring, not all cables are created equal. Some quietly do their job behind walls and ceilings, while others are engineered to protect lives in emergencies. Choosing between a halogen free cable and fire-resistant cable isn’t just a technical decision—it’s about safety, longevity, and peace of mind. Whether you’re wiring a home, office, or industrial site, knowing which cable will keep you safe when things go wrong can make all the difference.
Let’s break down the difference and help you make the choice that fits your needs.
What Does Halogen Free Cable Mean?
When you specify halogen free cable, you’re opting for a wiring solution that avoids elements like chlorine and bromine in its insulation or sheath. That absence translates into significantly lower emissions of corrosive acids and toxic gases if the cable ever burns. In fact, cabling that meets IEC 60754-1 and IEC 60754-2 norms ensures halogen acid content under 5 mg/g and conductivity below 10 µS/mm (Lapp Group).
Composition and Properties
- Insulation materials typically include silicone rubber, polyethylene, polyurethane, or thermoplastic elastomers.
- Volume resistivity often exceeds 10¹⁶ Ω·cm³, compared to 10¹²–10¹⁵ Ω·cm³ for standard PVC wires.
- Operating temperature range from ‑30 °C to 105 °C, offering reliable performance in harsh environments.
Regulatory Standards
Compliance with these standards confirms you’re getting genuine low-smoke zero-halogen (LSZH) performance:
- IEC 60754-1: Halogen acid gas content
- IEC 60754-2: pH value and conductivity of condensate
- DIN EN 61034-2: Smoke density and light permeability (≥ 60%)
Check out more on halogen free cable standards to ensure you meet local codes.
What are the Key Benefits?
- Reduced health hazard, thanks to minimal toxic gas and acid formation
- Improved visibility during evacuation, with lower smoke density
- Enhanced weather and UV resistance for long-term reliability
What are Fire Resistant Cables?
Fire resistant cables maintain circuit integrity under direct flame exposure, powering emergency alarms, smoke extractors, and lighting when you need them most. These products must pass stringent reaction-to-fire tests and may earn CPR classes B2ca, Cca, Dca, or Eca in Europe (Top Cable).
Fire Resistance Versus Flame Retardance
- Flame-retardant cables resist ignition but may not keep power flowing during a blaze.
- Fire-resistant cables, by contrast, support essential circuits for up to 120 minutes under fire conditions.
Key Standards and Classifications
- EN 50200 / IEC 60331: Circuit integrity under flame
- CPR classes B2ca to Eca: Reaction to fire performance (Top Cable)
- High Safety (AS) and AS+ ratings for halogen-free fire-resistant cables
Main Advantages
- Guarantees the operation of critical safety systems
- Facilitates faster, safer evacuation
- Often required in hospitals, tunnels, airports, and other high-risk venues
How Do Halogen-Free and Fire-resistant Cables Compare?
Your project may call for one or both features. The table below highlights the main differences:
| Feature | Halogen-free cables | Fire-resistant cables |
|---|---|---|
| Smoke emissions | Low density (≥ 60% light permeability) | Moderate, depends on LSZH inner layers |
| Toxic gas formation | Minimal acid gases | Minimal if also halogen-free |
| Circuit integrity under flame | No | Yes, up to 120 min |
| Temperature resistance | –30 °C to 105 °C | Often –5 °C to 70 °C with fire-proofing layers |
| Mechanical strength | Tensile > 1.2 Kgf/mm² (Jenuincable) | Varies by design, can include steel tape or mica |
| Standards | IEC 60754, 61034 | IEC 60331, EN 50200, CPR B2ca–Eca |
| Ideal applications | Public buildings, transport | Emergency circuits, fire alarms, lighting |
Which Cable Suits Your Project?
Choosing between halogen-free flame-retardant cables and fire-resistant cables depends on your priorities. Here’s how to match features to needs.
For Public Buildings and Transport
If you manage hospitals, tunnels, or stations, you want both low-smoke properties and uninterrupted power. Consider LSZH cables with fire-resistant cores, sometimes referred to as HFFR FR (halogen-free flame-retardant and fire-resistant).
For Critical Safety Circuits
When powering alarms, smoke extractors, or emergency lighting, fire resistance is non-negotiable. Look for AS+ rated products like TOXFREE® PLUS ZH 331 RZ1-K (AS+) from Top Cable, which pairs LSZH characteristics with proven circuit integrity.
For Eco-Sensitive Installations
Projects in green buildings or marine vessels often specify eco-friendly materials. Pure halogen-free cables, without additional fire-resistant layers, may reduce weight and cost while still meeting your environmental goals.
How to Choose the Right Supplier?
Finding a trusted provider ensures your cables perform as expected. Here’s what to check.
Quality Checks
- Third-party test reports for smoke density and acid gas emissions
- Batch traceability and material certificates
- Warranty terms and on-site technical support
Certifications to Look For
- CPR classification documents
- IEC 60754 and 61034 certificates
- EN 50200 / IEC 60331 fire resistance approvals
Why Consider Zable Cable for Halogen Free Cable?
Zable Cable specialises in LSZH and fire-resistant solutions tailored to professional needs. They offer bespoke lengths, responsive customer service and full compliance documentation.
Frequently Asked Questions
What are halogen free flame retardant cables used for?
You’ll find them in data centres, museums, and any place where low-smoke performance and fire prevention matter.
Is a halogen-free cable the same as LSZH?
Yes, LSZH stands for low smoke zero halogen, which is the same concept.
Can I install fire resistant cables outdoors?
Some types support UV and moisture, but double-check the product’s environmental rating.
Where do I find reputable halogen free cable manufacturers?
Look up halogen free cable manufacturers with global reach and certified test data.
Do fire-resistant cables produce toxic gases?
If they’re also halogen-free, emissions of corrosive acids and toxic halides remain very low.
Next Steps
Now you know the key differences between halogen-free and fire-resistant cabling. Review your project requirements, match the standards you need, then reach out to Zable Cable for a tailored quote. Your next step is to specify the right cable so you can install with confidence.
