Fire Resistant Mica Wire GN500 18 AWG — 500°C, 500V
Part No. SW-GN500-18-500
Fire-resistant wire with mica tape and fiberglass braid rated for 500°C, maintains circuit integrity during fire conditions.
- Conductor
- 18 AWG
- Voltage
- 500V
- Temp
- 500°C
- Ampacity
- 10A @ 500°C
Color: Natural
- MOQ
- 500 ft (152 m)
- Ships in
- 7-10 business days
- Packaging
- 500 ft Reels
Made at our Kunshan factory. Need a custom build, private label or DDP delivery? See our cable manufacturing services.
Fire Resistant Mica Wire GN500 specifications
| Conductor | Nickel-Plated Copper Stranded |
|---|---|
| Insulation | Mica Tape with Fiberglass Braid |
| Gauge | 18 AWG |
| Voltage Rating | 500V |
| Temperature Rating | 500°C |
| Ampacity | 10A @ 500°C |
| Color | Natural/White |
| Packaging | 500 ft Reels |
| Fire Rating | Up to 3 hours |
Compare with similar
| Wire | Max °C | Best for |
|---|---|---|
| Fire Resistant Mica Wire GN500 this product | 500°C | Fire alarm systems, Emergency lighting |
| Fluorine Plastic Wire FF46-1 Type | 200°C | High-temperature wiring, Computer wiring |
| Fire Resistant Mica Wire GN800 | 550°C | Critical safety circuits, Industrial fire protection |
| Fire Resistant Mica Wire GN1000 | 650°C | Power generation, Petrochemical plants |
Sizes in Fire Resistant Cable
Each row is a separate construction with its own page and part number.
| AWG | Type | Part no. | Ampacity | Quote |
|---|---|---|---|---|
| 18 AWG | GN500 | SW-GN500-18-500 | 10A @ 500°C | Quote SW-GN500-18-500 |
| 16 AWG, Fire Resistant Mica Wire GN800 | GN800 | SW-GN800-16-500 | 13A @ 550°C | Quote SW-GN800-16-500 |
| 14 AWG, Fire Resistant Mica Wire GN1000 | GN1000 | SW-GN1000-14-500 | 18A @ 650°C | Quote SW-GN1000-14-500 |
18 AWG GN500
this page- Part no.
- SW-GN500-18-500
- Ampacity
- 10A @ 500°C
- Part no.
- SW-GN800-16-500
- Ampacity
- 13A @ 550°C
- Part no.
- SW-GN1000-14-500
- Ampacity
- 18A @ 650°C
Construction
- 1
Conductor
Nickel-Plated Copper Stranded, sized 18 AWG to deliver 10A of continuous ampacity.
- 2
Insulation
Mica Tape, rated to 500°C and 500V.
- 3
Overbraid
Fiberglass Braid
Applications
- Fire alarm systems
- Emergency lighting
- Safety circuits
- Furnace wiring
- High-temperature sensors
Standards: GN500 · IEC 60331 · BS 6387
Common questions
What is the minimum order quantity and lead time?
Minimum order quantity is 500 ft (152 m). In stock — typical lead time 7-10 business days. Large-volume and OEM programs may qualify for reduced minimums and blanket order pricing.
What certifications and documentation are provided?
This product carries IEC 60331 Certified, BS 6387 CWZ, RoHS Compliant certifications and complies with GN500, IEC 60331, BS 6387. Every shipment includes a Certificate of Compliance. UL yellow cards, RoHS/REACH declarations, production test reports, and full batch traceability are available on request.
Can this cable be used outdoors or in extreme temperatures?
Rated 500°C. For outdoor or UV-exposed installations, specify the UV-resistant formulation. Beyond the rated temperature range, silicone (high heat, flexible to -60°C) or PTFE/FEP fluoropolymer (extreme heat and chemical exposure) or TPE (cold flex) constructions are available — contact us with your environmental parameters.
Do you offer custom lengths, colors, or configurations?
Yes. Custom colors (2,500 ft min), custom print legends, gauge changes, shielding, and multi-conductor assemblies are available. OEM programs with blanket orders can negotiate minimums below the standard threshold. Send requirements to support@shanghaiunicorncable.com.

