Overview
| Model NO. | Flexible Mineral Insulated Cable， BBTRZ，MICC | Application | Public Infrastructure，Data Centers，High-Rise Buildings |
| Voltage | Low Voltage | Conductor | Copper |
| Insulation Material | Mineral Compound | Jacket | LSZH |
| Material Shape | Round | Temperature |
90°C
|
| Certification | ISO, CCC, CE, RoHS, VDE | Conductor Type | Class 2 |
| Brand | ZhongYI | Voltage Type | 0.6/1 kV |
| Company Name | ZHONGYI Cable Co., Ltd | CORE | Multi-core |
| Transport Package | Plastic Packaging and Cardboard Boxes | Specification | 1.5-400mm² |
| Origin | HEBEI China | Color | black |
Flexible Mineral Insulated Cable MICC BBTRZ Cable Core Technical Specifications & Data Sheet
| Nominal Cross-Section (mm²) | No. of Cores | Conductor Type / Structure | Insulation Material | Approx. Outer Diameter (mm) | Voltage Rating (U0/U) | Approx. Weight (kg/km) |
|---|---|---|---|---|---|---|
| 25 | 4 Cores | Stranded Copper (Class 2) | Mineral Compound / Mica Tape | ~ 24.5 | 0.6/1 kV | ~ 1,450 |
| 35 | 4 Cores | Stranded Copper (Class 2) | Mineral Compound / Mica Tape | ~ 27.2 | 0.6/1 kV | ~ 1,920 |
| 50 | 4 Cores | Stranded Copper (Class 2) | Mineral Compound / Mica Tape | ~ 31.8 | 0.6/1 kV | ~ 2,610 |
| 70 | 4 Cores | Stranded Copper (Class 2) | Mineral Compound / Mica Tape | ~ 36.5 | 0.6/1 kV | ~ 3,540 |
| 95 | 4 Cores | Stranded Copper (Class 2) | Mineral Compound / Mica Tape | ~ 42.1 | 0.6/1 kV | ~ 4,780 |
| 120 | 4 Cores | Stranded Copper (Class 2) | Mineral Compound / Mica Tape | ~ 46.8 | 0.6/1 kV | ~ 5,950 |
Features
Flexible Mineral Insulated Cable MICC BBTRZ Cable with Closely similar to those Cable Comparison Table
| Model / Type Name | Cable Flexibility | Insulation / Core Structure | Outer Metallic Sheath | Fire Test Standard | Primary Disadvantage | Key Competitive Edge of BBTRZ |
|---|---|---|---|---|---|---|
| BBTRZ (Flexible MI Cable) | Highly Flexible | Stranded Copper + Mineral compound insulation | None (Uses LSZH non-metal jacket) | BS 6387 CWZ / IEC 60331 | No rigid metal armor for heavy crush resistance | Baseline (No length limit, easiest to bend) |
| BTTZ / MICC (Rigid MI Cable) | Extremely Rigid | Solid Copper rod + Magnesium Oxide powder | Seamless Solid Copper Tube | BS 6387 CWZ / BS EN 50200 | Extremely hard to bend; production length is limited | BBTRZ can be supplied in infinite continuous lengths. |
| BTLY (Aluminum Sheathed) | Semi-Flexible | Stranded Copper + Ceramic Mica tape | Seamless Aluminum Tube | BS 6387 CWZ | Aluminum sheath has a lower melting point than copper | BBTRZ has no aluminum corrosion risks in damp areas. |
| YTTW / BTTW (Corrugated) | Semi-Flexible | Stranded Copper + High-temp Mica wrap | Corrugated (Wrinkled) Copper Tube | BS 6387 CWZ | Corrugated ridges can trap moisture if not sealed well | BBTRZ is lighter weight and has a smaller outer diameter. |
| FR-PVC / NH-YJV | Highly Flexible | Standard PVC / XLPE + Flame-retardant layer | None (Standard plastic jacket) | IEC 60332 (Low fire grade) | Cannot survive high-temp direct flames (950°C) | BBTRZ is a true 950°C mineral fireproof cable. |
Ultimate Fire Resistance: Withstands temperatures up to 950°C under continuous flame without breakdown.
Flexible Installation: Multicore flexible stranded copper design allows easier bending and routing compared to rigid BTTZ cables.
Eco-Friendly Sheath: Low Smoke Zero Halogen (LSZH) outer jacket prevents emission of toxic gas during fire.
Water & Shock Proof: Maintains circuit integrity under simultaneous flame, water spray, and mechanical shock conditions.
Overload Protection: High current carrying capacity and excellent short-circuit thermal stability.
Application
High-Rise Buildings: Emergency power supplies for fire elevators, smoke extraction fans, and emergency lighting.
Public Infrastructure: Critical power distribution in subway stations, airports, shopping malls, and hospitals.
Hazardous Environments: Petrochemical plants, power stations, and chemical warehouses requiring fire and explosion safety.
Data Centers: Uninterrupted backup power linkage systems for server rooms and communication hubs.
Certification
Factory
FAQ
1. What is the fundamental fire-resistance performance of BBTRZ compared to traditional rigid BTTZ cables?
Ultimate Thermal & Structural Endurance:
Our BBTRZ flexible mineral insulated cable strictly complies with BS 6387 CWZ and IEC 60331 fire testing protocol benchmarks, maintaining total loop circuit integrity under direct 950°C flames for 3 hours. Unlike traditional, extremely rigid BTTZ cables that utilize a solid copper rod inside heavy magnesium oxide powder, our BBTRZ cable replaces the rigid shell with an advanced synthetic mineral compound paired with glass mica tape wrap. This engineering breakthrough ensures identical fire resistance while granting infinite manufacturing lengths and effortless routing flexibility.
2. Why is a Low Smoke Zero Halogen (LSZH) outer jacket mandatory for fireproof MICC cable layouts?
Life Safety & Corrosive Gas Mitigation:
In severe building fire disasters, standard PVC cable sheaths melt and emit dense, suffocating smoke heavily saturated with toxic halogen acids. These toxic fumes endanger human life and corrode expensive data center switchgear. Our BBTRZ (Flexible MICC) cable resolves this issue with a high-performance, flame-retardant Low Smoke Zero Halogen (LSZH) outer jacket. Under flame exposure, it generates negligible translucent smoke with zero corrosive toxicity, safeguarding public infrastructure during critical facility evacuation.
3. How does the BBTRZ cable manage dynamic environmental stresses like water spray and mechanical shocks?
Simultaneous Hazard Defense Matrix:
Real-world structural fires rarely involve flames alone; they are heavily accompanied by falling masonry and high-pressure fire-sprinkler activation. Our BBTRZ fireproof power cable is physically engineered to pass combined testing parameters simultaneously. It maintains uninterrupted 0.6/1kV power delivery even when subjected to continuous direct mechanical hammering and intense localized high-pressure water spray, securing survival for fire elevators, water pumps, and emergency ventilation shafts.
4. Does your factory provide comprehensive Type Test Reports for engineering project bidding?
Rigorous Regulatory B2B Compliance:
Yes. As an established direct cable manufacturer with 30 years of large-scale project supply expertise, every batch of our flexible mineral insulated cables undergoes exhaustive factory routing quality controls. We provide complete third-party Type Test Reports certifying full compliance with IEC, CE, and ISO frameworks. We actively support overseas electrical contractors with comprehensive technical datasheets and customized product documentation for municipal project approvals.
5. What are the packaging logistics and customization capabilities for wholesale BBTRZ cable orders?
Heavy-Duty Infrastructure Logistics:
Because our BBTRZ cable eliminates the heavy, rigid copper outer tube inherent to legacy MICC setups, it is significantly lighter and boasts a much tighter bending radius. This allows us to supply bulk orders wound neatly on high-capacity wooden reels or steel-wooden drums (spanning cross-sections from 1.5mm² up to 400mm²). We support custom core colors, sequential meter markings, and private label branding with reliable maritime transit lead times spanning 7 to 25 days.
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