Fire Survival Cables | Mineral Insulated & Fireproof
Explore GenSeeki’s fire survival mineral insulated cables designed for critical systems that demand uninterrupted power during fires. With certified protection up to 1000°C for over 3 hours, these cables ensure safety and performance in extreme conditions.
Fire Survival Mineral Cables for Emergency Power Integrity
Our fire survival cables are engineered to maintain circuit integrity under fire for up to 180+ minutes at 950–1000°C. Certified to IEC 60331, BS 6387 CWZ, and GB/T 19216, they are used in life-critical systems across tunnels, hospitals, metros, and high-rise buildings.
BTTZ Fire Survival Cables – Rigid Mineral Insulated Copper Sheath
Temperature Resistance: 1000°C for 3+ hours.
Construction: Solid copper conductor + MgO insulation + seamless copper sheath.
Certifications: IEC 60331, BS 6387 CWZ.
Features: Smoke-free, halogen-free, non-toxic.
Product Description:
BTTZ fire survival cable is a type of rigid mineral insulated cable built with a solid copper conductor, compacted magnesium oxide insulation, and a seamless copper sheath. Designed for use in high-risk fire environments, it ensures power continuity even in severe fires up to 1000°C.
YTTW / RTTZ Fire Survival Cables – Flexible MI Construction
Fire Resistance: 950–1000°C for over 180 minutes.
Construction: Stranded copper + MgO insulation + copper tape sheathing.
Certifications: Fire survival cable per IEC 60331 / BS 6387.
Advantages: Flexible, continuous length, halogen-free.
Product Description:
YTTW is a flexible mineral insulated fireproof cable widely used in power and safety-critical circuits. It consists of a stranded copper conductor, magnesium oxide insulation, and a flexible copper tape armor, providing both fire survival performance and installation convenience.
BTLY (NG-A) Fire Survival Cables – Lightweight Aluminum MI Type
Rating: 950–1000°C fire survival performance
Structure: Stranded copper + MgO + seamless aluminum alloy sheath.
Lightweight: Easier installation vs. traditional MI cables.
Features: LSZH, corrosion-resistant, easier to cut/terminate.
Product Description:
BTLY is a new-generation fire survival cable that maintains all the fireproof properties of traditional mineral insulated cables, while significantly reducing weight and installation difficulty. It consists of stranded copper conductors, high-purity MgO insulation, and a seamless aluminum alloy sheath, delivering excellent fire protection with easier handling.
BBTRZ Fire Survival Cables – LSZH Flexible Composite
Fire Resistance: Over 180 min at 950°C.
Sheath: LSZH outer jacket.
Structure: Copper + mineral insulation + optional steel armor.
Advantages: High flexibility, eco-friendly, installation-friendly.
Product Description:
BBTRZ cable is a flexible fireproof mineral insulated cable designed for modern construction where both high fire resistance and flexible installation are required. It uses copper conductors, mineral compound insulation, and is covered with a low-smoke, halogen-free sheath for added safety in emergencies. This cable is an ideal solution for critical circuits in public and industrial facilities.
Frequently Asked Questions – Fire Survival Cables from GenSeeki
Find answers to commonly asked questions about the technical specifications, installation, applications, and international standards of mineral insulated fireproof cables. If you need further assistance, feel free to reach out to our expert support team.
What is BTTZ cable and how is it different from traditional fire-resistant cables?
BTTZ is a mineral insulated fireproof cable featuring a solid copper core, magnesium oxide insulation, and a copper sheath. Unlike traditional fire-resistant cables with plastic insulation, BTTZ is completely inorganic, offering superior fire resistance (up to 1000°C for over 3 hours), no toxic gas emission, and no insulation aging.
In which environments is BTTZ cable most suitable?
BTTZ cables are ideal for critical applications requiring continuous operation during fire, such as emergency lighting, fire pumps, smoke exhaust fans, tunnels, high-rise buildings, petrochemical plants, and metro stations.
What is BTLY cable and how is it constructed?
BTLY is a flexible mineral-insulated fireproof cable. It uses copper conductors, a dense inorganic mineral insulation layer (like magnesium oxide or other fire-resistant materials), and a seamless aluminum alloy outer sheath. It combines the fire resistance of BTTZ with the flexibility of conventional cables.
How is BTLY different from BTTZ cable?
While BTTZ has a solid copper sheath and is more rigid, BTLY features a flexible aluminum alloy sheath and layered structure, making it easier to install in complex environments. Both offer excellent fire resistance, but BTLY is more suitable for modern buildings requiring easier wiring.
What is RTTZ cable and how is it structured?
RTTZ is a flexible mineral-insulated fireproof cable. It features copper conductors, mineral insulation (usually magnesium oxide or similar materials), a seamless copper tube sheath, and low-smoke, halogen-free outer protection.
Is RTTZ cable easy to install?
Yes. RTTZ has higher flexibility compared to BTTZ, supports long continuous runs, and requires fewer joints. It can be laid using standard cable trays or conduits, saving installation time and labor.
What is BBTRZ cable and how is it constructed?
BBTRZ is a flexible mineral insulated fire-resistant cable. It features copper conductors, mica tape insulation, flame-retardant filler, steel tape armor (optional), and a low-smoke halogen-free (LSZH) outer sheath. Unlike BTTZ or RTTZ, it does not have a copper or aluminum tube sheath, making it lighter and easier to install.
What are the advantages of BBTRZ over BTTZ or RTTZ?
BBTRZ is more flexible, lighter, easier to install, and cost-effective. While it may not match BTTZ or RTTZ in extreme fire or EMI shielding environments, it is ideal for general fire protection systems in buildings, tunnels, and infrastructure.
What’s the difference between Chinese mineral insulated fireproof cables and general fire survival cables?
Chinese mineral insulated fireproof cables (like BTTZ, YTTW, BBTRZ) typically use copper conductor + inorganic mineral insulation (such as magnesium oxide or mineral compound), providing superior fire resistance up to 950–1000°C for over 180 minutes.
Many conventional fire survival cables in global markets rely on mica tape or fire-rated XLPE layers, which may degrade faster at extreme temperatures.
Are GenSeeki’s fire survival mineral cables certified to international standards?
Yes. Genseeki’s fire survival mineral insulated cables comply with IEC 60331, BS 6387 (CWZ), and GB/T 19216, among others.
Specific models like BBTRZ and YTTW are also tested for low smoke zero halogen (LSZH) emissions and long-term flame endurance, making them suitable for use in Europe, Middle East, and Asia-Pacific regions.
Which cable type should I choose for 3-hour fire resistance at 1000°C?
For fire survival at 1000°C over 180 minutes, the best choice is BTTZ or YTTW cables from GenSeeki.
These rigid mineral insulated cables with copper sheath and inorganic insulation are designed to maintain circuit integrity in extreme fire.
How flexible are your fire survival cables for tight installations?
Yes. While BTTZ is rigid and ideal for straight, exposed runs, YTTW and BBTRZ are flexible fire survival cables designed for tight bends, risers, and ceiling ducts.
BBTRZ uses LSZH sheathing and composite mineral insulation, enabling easier termination and bending without compromising fire resistance.
Can fire survival cables from GenSeeki be customized for international projects?
Absolutely. We offer customization for conductor size, sheath color, cable marking, packaging, and voltage grade to meet the requirements of your international fire survival projects.
Whether for solar farms in the Middle East, subway systems in Southeast Asia, or power backup systems in Africa, we ensure compatibility with local standards and fast lead times from 3 production lines.
Still Have Questions?
If you have any additional questions or need personalized assistance, don’t hesitate to contact our expert mining cable team. We’re ready to provide fast, reliable support to help you find the perfect cable solution for your mining projects.
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