BBTRZ is a flexible fire-resistant mineral insulated power cable. It uses soft copper conductors, breaking the rigid limitation of traditional mineral cables.
Special mineral insulation delivers outstanding fire resistance. It can keep power supply intact under long-time high-temperature burning.
The cable structure is bendable for convenient laying in narrow pipe shafts and complex building layouts. It also features smoke-free, halogen-free performance to improve evacuation safety during fires.
Multiple cross-section options fit emergency lighting, fire pump and fire control power circuits of all kinds of buildings.
Product Advantages
Flexible copper conductor enables bending construction unlike hard mineral cables.
Mineral insulation offers lasting fire resistance for emergency power supply.
Low smoke zero halogen material reduces toxic gas in fire accidents.
Aging-resistant structure ensures decades of stable long-term operation.
Wide size range meets various fire protection circuit requirements.
Application Scenarios
Emergency power wiring for high-rise residential and office buildings.
Fire pump, fire elevator and emergency lighting circuit laying.
Fire safety wiring for shopping malls, hospitals, subway stations.
Fire-resistant power circuits for underground public facilities.
Quality & Service Support
All BBTRZ cables pass strict fire resistance and voltage withstand tests. Factory direct bulk supply with competitive prices. Check full specifications at https://yidongjiaolian.com.
| Item | Specification |
|---|---|
| Model | BBTRZ / WDZB-BBTRZ / WDZAN-BBTRZ |
| Conductor | Class 1/2 Stranded Oxygen-free Pure Copper |
| Core Number | 1/2/3/3+1/3+2/4/4+1/5 Core |
| Cross Section | 1.5–630mm² |
| Rated Voltage | 0.6/1kV |
| Inner Insulation | Inorganic Double-layer Mica Mineral Tape |
| Metal Sheath | None (Core feature vs NG-A BTLY) |
| Outer Jacket | LSZH Low Smoke Zero Halogen |
| Long-term Working Temp | -20℃ ~ 90℃ |
| Fire Resistance Index | 950℃, Continuous 3 Hours (BS6387 CWZ) |
| Short-circuit Max Temp | 250℃ (≤5s) |
| Min Bending Radius | ≥12D |
| Executive Standard | GB/T12666.6, BS6387 CWZ |
| Application | Fire Emergency Main Line, High-rise, Subway, Hospital, Airport |
| Certificate | ISO9001, CCC, CE |
| Service Life | 30+ Years |






