FR FIRE RESISTANT CABLE 4mm² x 4-Core

FR CABLE 4mm² x 4-Core Copper Conductor with Mica Tape (LSZH/LSZH)

• Cable Type: 4-Core x 4mm² Copper Conductor with Cu./Mica Tape and LSZH insulation and sheath.
• Standards Compliance: Manufactured as per BS 6004, 6360, and IEC 60502.
• Voltage Rating: Rated for 450/750 Volts applications.
• Conductor Material: Uses Plain Annealed Copper for high conductivity.
• Conductor Configuration: Comprises 7 strands in a Class 2 stranded circular form.
• Single Wire Diameter: Each copper strand has a diameter of 0.85 mm.
• DC Resistance: Offers a maximum conductor resistance of 4.610 Ohm/Km at 20°C.
• Insulation Material: Insulated with LSZH (Low Smoke Zero Halogen) for safety.
• Insulation Thickness: Each core has 0.80 mm thick insulation.
• Insulation Colours: Core colours are Red, Black, Blue, and Yellow.
• Overall Diameter of Insulated Core: Approximately 4.55 mm per core.
• Sheath Material: Outer sheath is made from LSZH material.
• Sheath Thickness: Sheath has a thickness of 1.70 mm.
• Sheath Colour: The outer sheath is Black in colour.
• Overall Cable Diameter: Total approximate diameter of the cable is 15.60 mm.
• Fire Resistance: Fire-tested for 3 hours at 750 Volts for enhanced safety.
• Mentioned Prices are in Meters.

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FR CABLE 4 mm² × 4-Core Copper Conductor with Mica Tape (LSZH/LSZH)

Introduction

When you need a cable that withstands fire without compromising performance, the FR CABLE 4 mm² × 4-Core fits the bill. This rugged cable combines high-conductivity copper with fire-shielding mica and low-smoke, zero-halogen materials. Consequently, it keeps critical systems—such as emergency lighting, alarm circuits, and power distribution—online when flames erupt. Moreover, its robust design simplifies installation across commercial, industrial, and public-sector facilities.

Conductor Construction & Electrical Efficiency

We strand each core from seven annealed copper wires, each 0.85 mm in diameter. As a result, installers enjoy superior flexibility when routing through tight conduits and trays. At the same time, this configuration yields a mere 4.61 Ω/km DC resistance at 20 °C, minimizing energy loss and heat buildup. Furthermore, the Class 2 circular stranding enhances mechanical strength, which reduces the risk of conductor breakage during bending or handling.

Fire Performance & Mica Shielding

Our cable passes a rigorous three-hour fire test at 750 V, ensuring uninterrupted operation under extreme heat. To achieve this, we wrap each insulated conductor in 0.13 mm of inorganic mica tape. Therefore, the cable maintains circuit integrity well beyond standard temperature limits. Additionally, mica impedes flame spread along the cable’s length, protecting adjacent wiring and equipment from fire damage.

Insulation & Sheath Layers

Core Insulation: First, we apply 0.80 mm of LSZH material around each conductor. This choice guarantees minimal smoke and toxic gas release under fire conditions, thereby improving occupant safety and aiding first-responder visibility.
Outer Sheath: Next, we jacket the entire assembly in a 1.70 mm LSZH sheath. Not only does this layer resist moisture, abrasion, and UV exposure, but it also retains its structural integrity during prolonged heat exposure. Consequently, you receive a cable that stands up to both environmental stresses and fire scenarios.

Dimensions & Installation Advantages

With an overall diameter of 15.60 mm, this four-core cable balances protection with compactness. Each insulated core measures approximately 4.55 mm, which enables neat placement in constrained spaces. Moreover, the four core colors—red, black, blue, and yellow—facilitate quick identification during wiring and maintenance. We deliver custom reel lengths on wooden drums, minimizing waste and accelerating project timelines.

Standards & Regulatory Compliance

We manufacture this FR CABLE to meet and exceed BS 6004, BS 6360, and IEC 60502 requirements. By adhering to these international standards, we ensure the cable’s electrical, mechanical, and fire-safety performance aligns with global best practices. Therefore, engineers can specify this product with confidence, knowing it fulfills strict regulatory criteria across diverse applications.

Durability & Long-Term Reliability

Beyond fire protection, this cable excels in demanding environments. Its LSZH layers repel water ingress and chemical exposure, while the mica reinforcement prevents conductor deformation at elevated temperatures. As a result, you benefit from extended service life and reduced maintenance costs. Additionally, the cable’s professional black finish blends seamlessly into industrial and architectural installations.

Conclusion

By integrating high-conductivity copper, mica fire shielding, and dual LSZH layers into a single, compact design, the FR CABLE 4 mm² × 4-Core delivers unmatched safety and reliability. Its low-smoke, halogen-free materials enhance evacuation conditions, and its robust build simplifies installation and upkeep. When you specify this cable, you invest in continuous power delivery and clear escape routes—even in the worst fire scenarios.

Contact Us

For detailed technical data sheets, competitive pricing, or tailored installation guidance, please contact our sales engineers. We’ll help you determine optimal cable quantities, routing strategies, and termination techniques—ensuring a seamless, code-compliant solution for your next project.