INDUS FIRE RESISTANT CABLE 7-Core x 1.5mm²

FR CABLE 7 × 1.5 mm² Hard-Skin Enhanced Fire-Resistant Cable – 300/500 V (LSZH, Fire-Survival Grade)

Introduction

Selecting the right cable for fire detection loops, alarm systems, voice evacuation, and emergency lighting can make the difference between a safe evacuation and a catastrophic failure. The FR CABLE 7 × 1.5 mm² Hard-Skin Enhanced Fire-Resistant Cable delivers unmatched reliability under fire conditions. By combining robust mechanical protection, advanced fire-survival materials, and low-smoke, zero-halogen (LSZH) compounds, this cable ensures that critical life-safety circuits remain operational when you need them most. Moreover, its hard-skin jacket simplifies routing through busy cable trays while preserving circuit integrity in extreme heat.

Exceptional Fire Performance

This cable meets PH30, PH60, and PH120 classifications, maintaining full load for up to 120 minutes at 300/500 V even when exposed to direct flame. Consequently, fire alarms and exit lighting continue to function throughout the evacuation, giving occupants and first responders ample time to reach safety. Moreover, independent laboratory tests confirm negligible changes in circuit resistance and voltage drop after prolonged fire exposure, ensuring uninterrupted power transmission.

Conductor Types & Voltage Rating

The FR CABLE 7 × 1.5 mm² operates at 300/500 V, matching standard fire-safety system requirements. It features:

• 1.5 mm² to 2.5 mm² cores: Class 1 solid copper (BS EN 60228)—ideal for consistent current delivery.

• 4 mm² cores (where specified): Class 2 stranded copper (BS EN 60228) for added flexibility.

By selecting the correct conductor size, you avoid overheating under both normal and emergency loads. Furthermore, proper sizing reduces installation time and ensures compliance with electrical codes.

Advanced Fire-Resistant Insulation

Mica/Glass Tape Barrier

We wrap each copper core in 0.12 mm of inorganic mica/glass tape. This layer withstands temperatures above 750 °C, preventing sheath meltdown and conductor failure. Additionally, it blocks flame penetration, preserving circuit continuity long after conventional cables fail.

High-Performance Silicone Rubber

Next, we over-mold the tape with a specially formulated silicone rubber. Unlike traditional plastics, this compound remains flexible under heat, preventing cracks. As a result, the cable retains mechanical integrity and resists water ingress—even after extended fire exposure.

Enhanced Screening & Outer Sheath

Following the insulation, we apply an AL/PET overall screen. This aluminum/polyester wrap reflects radiant heat and shields against electrical interference. Finally, we encase the assembly in a 1.2 mm LSZH outer sheath that emits minimal smoke and zero halogen gases. Consequently, you protect both the cable and anyone trapped in a smoke-filled environment from toxic fumes.

Mechanical Durability & Wide Temperature Range

The FR CABLE features a rugged hard-skin jacket that resists abrasion, impact, and crushing during installation. Moreover, it performs reliably from –40 °C to +90 °C, making it suitable for unheated plant rooms and sun-exposed rooftop trays alike. With a minimum bending radius of only six times its diameter, you can route the cable through tight bends without damaging internal cores.

Installation Benefits & Identification

To streamline installation, we print clear polarity and phase markings on the sheath every meter. In addition, the seven cores remain neatly stranded for easy termination. Since all conductors share a tough outer jacket, you complete cable pulls more quickly—saving both time and labor costs.

Compliance & Quality Assurance

We manufacture this cable to exceed BS 5839-1:2013 Clause 26.2(e) and BS 8434-2 fire-resistance standards. In addition, it meets RoHS directives for freedom from hazardous substances. Each batch undergoes rigorous in-house testing for electrical continuity, insulation resistance, and fire performance. As a result, you receive a cable that delivers consistent, code-compliant performance across every reel.

Applications & Project Support

Ideal for high-rise residential, healthcare, education, and transport hubs, this cable supports:

• Fire detection and alarm circuits

• Voice evacuation and public-address systems

• Emergency lighting and exit signage

• Fire-team communication loops

Our engineering team also provides layout reviews, cable-tray fill calculations, and onsite training, ensuring a smooth, failure-free installation from design through commissioning.

Conclusion

By integrating mica/fire-survival barriers, silicone flex insulation, an AL/PET screen, and an LSZH hard-skin sheath, the FR CABLE 7 × 1.5 mm² achieves unparalleled fire-survival performance. It maintains circuit integrity for up to two hours, resists mechanical and environmental abuse, and prioritizes occupant safety with minimal smoke and toxins. When you need dependable, life-safety cabling, this FR CABLE delivers peace of mind—every time.

Contact Us

For detailed technical data, custom length options, or project consultation, please contact our fire-safety specialists. We’ll help you select the right cable schedule, optimize tray routing, and ensure code compliance—so you can focus on delivering a secure environment for building occupants.