Description:
Durable and flame-resistant BTTZ mineral insulated cable with copper conductor and seamless copper tube sheath. Ideal for critical fire protection systems in high-rise buildings, tunnels, and industrial plants. Voltage rating: 0.6/1kV.
Product Overview:
Reliable BTTZ Fire-Resistant Mineral Cable for Harsh Environments
Our BTTZ (Bare Mineral Insulated) fireproof cable is engineered to provide uninterrupted power transmission in the event of fire or extreme temperatures. Constructed with a solid copper conductor, magnesium oxide insulation, and a continuous copper tube sheath, this cable delivers outstanding fire resistance, corrosion resistance, and mechanical strength.
Perfect for emergency lighting, fire alarm systems, ventilation control, and other life-safety circuits, the BTTZ cable meets international safety and performance standards. Its compact structure and long service life make it a dependable choice for permanent installations in tunnels, subways, nuclear plants, and more.
Key Features：
Inorganic Mineral Insulation: Flame-retardant, non-combustible, and non-toxic even at high temperatures.
Seamless Copper Tube Sheath: Provides 100% shielding, mechanical protection, and corrosion resistance.
Excellent Fire Resistance: Operates reliably for over 3 hours under direct fire at 950–1000°C.
Low Smoke, Zero Halogen (LSZH): Ensures minimal smoke emission, safeguarding human health in case of fire.
Long Lifespan: Up to 100 years of service life in indoor installations with proper protection.
Compact Design: Smaller outer diameter than traditional fireproof cables, easy to install in tight spaces.
Technical Specifications:
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Parameter
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Specification
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Conductor Material
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Solid copper
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Insulation
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Magnesium Oxide (MgO)
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Sheath
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Seamless copper tube
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Rated Voltage
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0.6/1kV
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Operating Temperature
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-40°C to +250°C (momentarily up to 1000°C)
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Fire Resistance
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3 hours at 950°C–1000°C
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Core Number
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1 / 2 / 3 / 4 cores
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Cross-sectional Area
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1.5 mm² to 300 mm² (custom available)
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Shielding
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Full electromagnetic shielding
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Standards
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IEC 60332, BS 6387 CWZ, GB/T 13033
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Applications：
Emergency evacuation lighting
Fire alarm and control systems
Metro and tunnel projects
Power supply for fire-fighting equipment
Oil & gas and petrochemical plants
High-rise commercial and residential buildings
Nuclear power stations
We have alarms on extruding insulation andjacket, to keep 100% quality.
Founded in 1994, Fujian Suke Cable Technology Co., Ltd. Decades of wire and cable manufacturing experience enables us to be one of Top 20 cable manufacturers in China. Our products cover low/medium/extra high voltage power cable, submarine cable, control cable, instrumentation cable, building wire, flexible rubber cable, fire rated cable, renewable cable, solar cable, industrial cable, LAN cable, coaxial cable etc, a total of nearly 30 series with 4,000 types and more than 50,000 specifications for various fields within over 100 countries.
10
No. of Production Lines:Above 10
7
Number of Foreign Trading Staff:7
3
The company has 3 factories
Our workshops and certifications
Our company has three plants possessing 200 square kilometers and over 4500 employees with 130 technicians creating annual export revenue exceeding 150 Million USD.
Also, our company has passed ISO 9001, ISO 14001, ISO45001, OHSAS18001,etc certificatiom, and has got CCC,TLC, TUV, VDE, UL, CE, SAA, BS etc. certificates for our products.
Building wire is generally used in house fixed wiring. It is PVC insulated unsheathed electric wire. The onstruction is CU/PVC.
What is the lifespan of a typical electrical cable?
The lifespan can vary widely based on the type of cable and environmental factors, but many cables can last 20 years or more when properly installed and maintained.
What is your sample policy?
As a supplier, we believe that samples are necessary for both of us and our policy is to provide free samples whenever possible. However, if the sample structure is very complicated and we don't have it in stock and it needs to be customised, in this case we have to charge a sample fee. About the sample shipment, you need to pay the shipping fee, you can prepay us the shipping fee we help to send it by express agent, you can also choose express shipping fee to pay.
Conductor Structure of Power Cable
1. Conductors comply with IEC, AS/NZS and BSI standard requirements
2. The conductors of multi-core have different shapes. The single-core is circular. The shape of Multi-core cable with size up to and 35m2 can be circular, semicircular and fan-shaped, the conductor with size over and 50m2 are circular and semicircle.
3. A single core is allowed with size below 16m2. Conductor More than 25m2 are multi strands.
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