TOT Wire & Cable is a leading mineral insulated cable manufacturer and supplier, offering high-performance MI cables engineered for fire resistance, mechanical strength, and long-lasting stability. Our mineral insulated copper cables are designed to operate under extreme heat and hazardous conditions, making them ideal for critical applications where safety is paramount.
| Image | Name | Features | Quote |
|---|---|---|---|
| https://totcables.com/wp-content/uploads/2025/04/BTLY-Aluminum-Sheath-Insulated-Mineral-Insulated-Cable.webp | BTLY Aluminum Sheath Insulated Mineral Insulated Cable (MI Cable),https://totcables.com/mineral-insulated-cable-micc-mi-cable/btly-aluminum-sheath-insulated-mineral-insulated-cable-mi-cable/ | Aluminum sheath, magnesium oxide insulation, lighter weight than copper sheathed cables, good thermal conductivity, and excellent fire resistance. | CLICK FOR QUOTE,https://totcables.com/contact-us/ |
| https://totcables.com/wp-content/uploads/2025/04/BTTZ-Rigid-Mineral-Insulated-Cable-MI-Cable.webp | BTTZ Rigid Mineral Insulated Cable (MI Cable),https://totcables.com/mineral-insulated-cable-micc-mi-cable/bttz-rigid-mineral-insulated-cable-mi-cable/ | Copper sheath, magnesium oxide insulation, suitable for high-temperature environments, excellent fire resistance properties. | CLICK FOR QUOTE,https://totcables.com/contact-us/ |
| https://totcables.com/wp-content/uploads/2025/04/RTTZ-YTTW-Flexible-Mineral-Insulated-Cable.jpg | RTTZ (YTTW) Flexible Mineral Insulated Cable,https://totcables.com/mineral-insulated-cable-micc-mi-cable/rttz-yttw-flexible-mineral-insulated-cable/ | Flexible design with mineral insulation, allows for easier installation in complex routing situations, maintains fire resistance properties. | CLICK FOR QUOTE,https://totcables.com/contact-us/ |
| https://totcables.com/wp-content/uploads/2025/04/BTTVZ-PVC-Sheathed-Mineral-Insulated-Cable.png | BTTVZ - PVC Sheathed Mineral Insulated Cable,https://totcables.com/mineral-insulated-cable-micc-mi-cable/bttvz-pvc-sheathed-mineral-insulated-cable/ | Uses PVC outer sheath, suitable for environments with common fire resistance requirements. | CLICK FOR QUOTE,https://totcables.com/contact-us/ |
| https://totcables.com/wp-content/uploads/2025/04/BTTQ-Lightweight-Copper-Core-Sheath-Mineral-Insulated-Cable.webp | BTTQ - Lightweight Copper Core Sheath Mineral Insulated Cable,https://totcables.com/mineral-insulated-cable-micc-mi-cable/bttq-lightweight-copper-core-sheath-mineral-insulated-cable/ | Lightweight design, suitable for power demands with lower loads | CLICK FOR QUOTE,https://totcables.com/contact-us/ |
| https://totcables.com/wp-content/uploads/2025/04/BTTVQ-Copper-Core-Sheath-Mineral-Insulated-Cable-1.webp | BTTVQ - Copper Core Sheath Mineral Insulated Cable,https://totcables.com/mineral-insulated-cable-micc-mi-cable/bttvq-copper-core-sheath-mineral-insulated-cable/ | Suitable for power transmission at higher operating temperatures. | CLICK FOR QUOTE,https://totcables.com/contact-us/ |
A mineral insulated cable (MI cable) consists of copper conductors insulated with compressed magnesium oxide (MgO) and protected by a seamless copper sheath. This construction makes it non-combustible, waterproof, and highly fire-resistant.
Frequently searched: mineral insulated fire cable, fire rated cable, MI wire, best fire resistant cable, mineral insulated cable price
Key SpecificationsConductor Material: Copper (plain or tinned)
Insulation: Magnesium Oxide (MgO) powder
Sheath: Seamless Copper (or LSZH-covered variant)
Voltage Rating: 300V / 600V / 750V / 1000V
Temperature Range: -40°C to +950°C (surge up to 1083°C)
Fire Resistance: IEC 60331, BS 6387 (CWZ)
Protection Class: IP66–IP68 when installed properly
Core Options: 1, 2, 3, 4 cores or multi-core
Certifications: IEC, BS, UL, CE, RoHS
Advantages of MI Cables
Fireproof – Will not burn, melt, or emit smoke
Robust – Crush resistant, waterproof, and rodent-proof
Withstands extreme heat – Ideal for emergency systems
Long life span – Mineral materials don't degrade
Compact design – High current ratings in small diameter
Excellent EMI shielding – Natural metal sheath reduces interference
Typical ApplicationsEmergency lighting circuits
Fire alarm and sprinkler systems
Power supplies in tunnels, airports, and high-rise buildings
Nuclear and chemical plants
Critical instrumentation and control systems
Hazardous locations (ATEX zones)
Used when performance under fire, impact, and moisture is non-negotiable.
Mineral Insulated Cable Types| Type | Sheath | Use Case |
|---|---|---|
| Bare Copper MI Cable | Plain Copper | Indoor fire safety and control wiring |
| Covered MI Cable | LSZH or PE Jacket | Outdoor use or corrosive environments |
| Twin-core MI Cable | Copper | Fire alarms and emergency lighting |
| Custom MI Cable | Per request | Specialized installations |
Mineral Insulated Cable InstallationMI cable installation requires special attention to:
Cable bending radius
Termination with pot seals and glands
Fixing clips to avoid damage
Proper routing to avoid electrical stress
We provide installation accessories, support materials, and detailed guides.
Supply OptionsBulk coils, pre-cut lengths, or pre-terminated
Custom conductor sizes and colors
Fast delivery for standard specifications
OEM & project-based packaging available
Why Choose TOT for MI Cables?
Decades of experience as MI cable suppliers
Full compliance with global fire safety standards
Competitive mineral insulated cable prices
Customization for project needs
Global shipping and fast production
Get a Quote for Bulk or Custom MI Cable OrdersNeed the best fire resistant cable for your next project? Looking for a trusted MI cable manufacturer? Contact us for datasheets, pricing, or custom-built solutions.
Recent Posts
[
