Fire Resistant Mica Glass Fiber Wire
Maintains Circuit Integrity Through Direct Flame Exposure — Up to 650°C
Mica-wrapped wire designed for mission-critical safety circuits. GN500, GN800, and GN1000 series maintain full circuit integrity during direct flame exposure for up to 3 hours. Mandatory for fire alarm circuits, emergency lighting, nuclear facilities, and tunnel installations.
650°C
Max Temperature
3
Product Series
3 Hours
Fire Survival
IEC BS UL
Certifications
Why Choose Our Fire Resistant Wire?
Direct manufacturer with certified fire survival testing and global compliance
3-Hour Fire Survival
Maintains full circuit integrity through direct flame exposure for up to 3 hours — tested at 950°C per BS 6387 CWZ.
Direct Manufacturer
No middlemen — products come straight from our Shanghai factory, ensuring consistent quality and competitive pricing.
In-House Testing Lab
Every batch is tested for dielectric strength, temperature rating, fire survival, and mechanical properties before shipment.
Low Minimum Orders
Starting from 500 ft per SKU — ideal for prototyping, engineering samples, or small-batch production runs.
Global Compliance
Products certified to IEC 60331, BS 6387, UL, and IEEE 383 standards for worldwide market acceptance.
Custom Engineering
Submit your spec sheet and our engineers will match or exceed your requirements — gauge, insulation, certifications.
GN Series Fire Resistant Wire
Three performance tiers for every fire safety application — from standard alarm circuits to nuclear-grade installations.
ENTRY LEVEL
HIGH VOLTAGE3 Product Series
Each GN series is engineered for a specific voltage and temperature tier. Click any card to explore individual products with full specifications.
GN500 — Mica Fire Resistant Wire
Entry-level fire-resistant wire with mica tape and fiberglass braid rated for 500°C. Ideal for standard fire alarm circuits and emergency lighting where 500V rating is sufficient.
- 500°C continuous temperature rating
- Mica tape with fiberglass braid insulation
- Up to 3 hours fire survival
Temp Range
Up to 500°C
Voltage
500V
GN800 — High-Voltage Mica Fire Resistant Wire
Double-layer mica tape with fiberglass overbraid for enhanced fire resistance at 800V. Designed for critical safety circuits in industrial fire protection and high-voltage emergency systems.
- 550°C continuous temperature rating
- Double-layer mica tape construction
- 800V voltage rating for industrial systems
Temp Range
Up to 550°C
Voltage
800V
GN1000 — Premium Mica Fire Resistant Wire
Premium multi-layer mica tape with fiberglass and silicone coating for the highest fire resistance. Rated for 650°C and 1000V — the top-tier choice for nuclear facilities, petrochemical plants, and critical infrastructure.
- 650°C — highest fire rating available
- 1000V for heavy-duty power circuits
- 3 hours fire survival at 950°C
Temp Range
Up to 650°C
Voltage
1000V
Industries & Applications
Fire-resistant mica wire is mandated by code in safety-critical installations across these industries
Fire Safety Systems
- Fire Alarm Circuits
- Smoke Detection Wiring
- Sprinkler Control Systems
- Fire Door Controls
- Emergency Shutdown Systems
Emergency Lighting
- Escape Route Lighting
- Emergency Exit Signs
- Stairwell Lights
- Backup Power Circuits
- Safety Beacon Systems
Industrial Facilities
- Petrochemical Plants
- Power Generation
- Steel Mills
- Chemical Processing
- Manufacturing Plants
Nuclear & Critical
- Nuclear Power Stations
- Control Room Wiring
- Safety Instrumentation
- Containment Systems
- Critical Data Links
Tunnels & Transport
- Rail Tunnel Wiring
- Road Tunnel Systems
- Metro & Subway
- Airport Systems
- Port Facilities
Buildings & Structures
- High-Rise Buildings
- Hospitals & Healthcare
- Data Centers
- Public Assembly Venues
- Underground Structures
Technical Comparison — GN Series
Compare all three series to find the right fire-resistant wire for your application
| Characteristic | GN500 | GN800 | GN1000 |
|---|---|---|---|
| Max Temp | 500°C | 550°C | 650°C |
| Voltage | 500V | 800V | 1000V |
| Gauge | 18 AWG | 16 AWG | 14 AWG |
| Ampacity | 10A | 13A | 18A |
| Fire Rating | 3 hours | 3 hours | 3 hours at 950°C |
| Insulation | Single Mica + Fiberglass | Double Mica + Fiberglass | Multi-Layer Mica + FG + Silicone |
| Key Standard | GN500 | GN800 | GN1000 |
Red = highest performance tier. Full datasheets available on request.
Frequently Asked Questions
Answers to the most common questions about fire-resistant mica wire
Still have a question?
Ask our engineering teamNeed fire-resistant wire for your project?
Our technical engineers will review your fire safety requirements — temperature, voltage, environment, and certifications — and recommend the ideal GN series solution within 24 hours.
Quote response within 24 hours · Samples available · No minimum for first order