Jiaxing Doublewin Cable Co., Ltd. is one of the most reliable manufacturers and suppliers of multi core fire alarm cable in China. If you're going to wholesale bulk multi core fire alarm cable made in China, welcome to get pricelist and free sample from our factory. All customized cables are with high quality and competitive price.
Multi core fire alarm cable is a high-core-count fire alarm cable (8, 12, 16, 20 or 24 cores) used to carry multiple fire alarm loops, zones and sounder circuits up a building riser or along a backbone. One multi core fire alarm cable replaces many separate 2-core runs, simplifying installation, reducing conduit fill and giving a clean, traceable fire alarm backbone. Available in stranded copper with LSZH jacket, optional foil shield, and CPR EN 50575 fire performance. As a multi core fire alarm cable manufacturer, Jiaxing Doublewin Cable Co., Ltd produces these cables in-house in Haiyan, Zhejiang, China and supplies them in bulk worldwide.
✓ Core count (2–24 or custom)
✓ Shielding: foil, braid or foil+braid
✓ Conductor colour codes (BS EN or custom)
✓ Jacket material: LSZH or PVC; jacket colour (red, white, orange)
✓Brand marking & sequential metre marking
✓Reel / box packaging (305 m / 1000 ft standard)
Multi Core Fire Alarm Cable Technical Specifications
| Product Name | Multi Core Fire Alarm Cable |
|---|---|
| CPR EN 50575 Class | Cca(standard); B2ca (on request) |
| Core Counts | 2, 4, 6 - 24 core |
| Conductor Sizes | 2/4/6-24 *0.8mm²/1.0mm²/1.5mm²/2.5mm² |
| Conductor Material | Stranded/ Solid bare copper |
| Insulation Color | Red/Black (2-core); BS EN colour code for multi-core |
| Insulation Material | PVC or LSZH |
| Wrap | Mica tape |
| Shielding | Aluminium/polyester foil + tinned Cu drain wire (F/UTP) · tinned Cu braid (S/UTP) · foil + braid (SF/UTP) |
| Shielding Coverage | Foil: 100% · Braid: min 85% |
| Drain Wire | Tinned copper |
| Jacket color | Red (standard); white, orange, custom on request |
| Jacket Material | PVC or LSZH,flame retardant |
| Rated Voltage | 300/300 V |
| Temperature Range | -15°C to +70°C (PVC); up to +90°C (LSZH) |
| Compliance | EN 50200, IEC 60331, BS6387 CPR EN 50575, CE, RoHS |
| Packing | 100 m / 305 m (1000 ft) / 500 m per reel or box |
Product Parameters & Details
| Conductor Nominal Cross-section | Conductor Construction | Insulation Nominal thickness | Max.Diameter of cable | Max. d.c resistance at 20℃ | Min.Insulation resistance at 70℃ | Current rating of cable in air at 40℃ | Approx weight of cable |
| mm2 | mm | mm | mm | Ω/km | mΩ.km | A | kg/km |
| 2*0.75 |
2*1/0.97 |
0.6 | 4.6*7.1 | 24.5 | 0.012 | 12 | 39.6 |
| 2*1.0 | 2*1/1.13 | 0.6 | 4.8*7.4 | 18.1 | 0.011 | 14 | 46.2 |
| 2*1.5 | 2*1/1.38 | 0.7 | 5.3*8.5 | 12.1 | 0.011 | 18 | 61.8 |
| 2*2.5 | 2*1/1.78 | 0.8 | 6.2*10.1 | 7.41 | 0.010 | 25 | 92.2 |
| 2*4 | 2*1/2.22 | 0.8 | 6.7*11.1 | 4.61 | 0.0085 | 33 | 125.4 |
| 2*4 | 2*7/0.85 | 0.8 | 6.9*11.5 | 4.61 | 0.0080 | 33 | 133.1 |
| 2*6 | 2*1/2.76 | 0.8 | 7.5*12.5 | 3.08 | 0.0070 | 42 | 172.6 |
| 2*6 | 2*7/1.04 | 0.8 | 7.8*13.0 | 3.08 | 0.0065 | 42 | 182.5 |
| 3*0.75 | 3*1/0.97 | 0.6 | 4.6*9.6 | 24.5 | 0.012 | 10 | 55.8 |
| 3*1.0 | 3*1/1.13 | 0.6 | 4.8*10.1 | 18.1 | 0.011 | 12 | 65.5 |
| 3*1.5 | 3*1/1.38 | 0.7 | 5.3*11.7 | 12.1 | 0.011 | 15 | 88.5 |
| 3*2.5 | 3*1/1.78 | 0.8 | 6.2*14.0 | 7.41 | 0.010 | 21 | 133.0 |
| 3*4 | 3*1/2.22 | 0.8 | 7.0*15.8 | 4.61 | 0.0085 | 28 | 197.2 |
| 3*4 | 3*7/0.85 | 0.8 | 7.1*16.3 | 4.61 | 0.0080 | 28 | 198.7 |
| 3*6 | 3*1/2.76 | 0.8 | 7.5*17.5 | 3.08 | 0.0070 | 36 | 251.8 |
| 3*6 | 3*7/1.04 | 0.8 | 7.8*18.2 | 3.08 | 0.0065 | 36 | 266.3 |
Our Fire Alarm cable Display
Why Multi Core Fire Alarm Cable for Building Risers & Backbones
In multi-storey buildings, running many separate 2-core fire alarm cables up a riser creates congestion, makes tracing faults difficult and wastes conduit space. A multi core fire alarm cable bundles many circuits into one jacket - one pull up the riser, one cable to terminate at each floor, and a clean, traceable fire alarm backbone cable. It is the standard for hotels, hospitals, offices, schools and high-rise residential buildings.
One Pull, Many Circuits
2–24 fire alarm circuits in a single jacket.
01
Lower Conduit Fill
One multi-core cable uses less conduit than many 2-cores.
02
Clean Backbone
Single traceable riser - easy fault-finding.
03
Colour-Coded Cores
BS EN colour code for fast floor-by-floor termination.
04
When to Use Shielded Fire Alarm Cable - Environment Decision Guide
Not every fire alarm installation needs shielding. Use this guide to decide whether a shielded fire alarm cable is required for your project:
| Environment / Condition | EMI Risk | Shielded Recommended? | Reason |
| Residential / small office | Low | Optional | Quiet environment; unshielded usually sufficient. |
| Near mains wiring (≥ 50mm) | Medium | Yes | 50/60 Hz hum can cause false alarms. |
| Near emergency lighting ballasts | High | Yes | Fluorescent/LED ballasts emit strong EMI. |
| Near fire pump / HVAC motors | High | Yes | Motor start-up transients disrupt loop data. |
| Near VSD / inverter drives | High | Yes (foil+braid) | High-frequency switching noise; use SF/UTP. |
| Near radio / telecom equipment | High | Yes | RFI can corrupt addressable loop data. |
| Industrial plant / factory | Very High | Yes (foil+braid) | Multiple noise sources; maximum shielding needed. |
| Hospital / data centre | Medium-High | Yes | Critical life safety; signal integrity essential. |
Shield Type & Fire Rating Combination Matrix
Shielded fire alarm cable combines EMI shielding with fire-safety performance. This matrix helps you match the right shield type to your fire rating needs - whether you need a standard foil shielded fire alarm cable for general commercial use, a braided shield fire alarm cable for high-RFI environments, or a combination with mica tape for circuit integrity.
| Shield Type | Jacket Option | Fire Performance | Best For | ||
| Foil (F/UTP) | LSZH | CPR Cca/Dca | General commercial, addressable loops | ||
| Braid (S/UTP) | LSZH | CPR Cca/Dca | Flexible runs, high RFI environment | ||
|
LSZH | CPR Cca/B2ca | Industrial, VSD, extreme EMI | ||
| Foil + Mica Tape | LSZH | CPR + EN 50200 PH30 | Fire-rated + shielded for critical circuits | ||
| Foil (F/UTP) | PVC | CPR Eca/Dca | Cost-sensitive commercial, low smoke requirement |
Shielding Does Not Replace Fire Rating
A shielded cable is not automatically fire-rated. The shield protects against EMI; the jacket material (LSZH) and any fire barrier (mica tape) provide fire performance. For life-safety circuits that need both EMI protection and circuit integrity, specify foil shield + mica tape + LSZH jacket.
Quality Control & Testing
Every reel is 100% tested before shipment. For multi core fire alarm cable, we test conductor resistance per IEC 60228 on every core, insulation resistance between every pair of cores, and high-voltage withstand between all cores and the sheath. Shield continuity is verified on shielded versions. A sample of each batch is retained for full traceability. Third-party inspection (SGS, BV, TÜV) welcome.
Conductor Resistance
IEC 60228 on every core - critical for loop accuracy.
Core-to-Core Insulation
Resistance tested between every core pair.
Batch Traceability
Sample retained per lot.
Typical Applications
This shielded fire alarm cable is designed for fire signalling wiring within fire safety systems, especially for sites with strong electromagnetic interference.
Building Risers
Vertical fire alarm backbone up a building.
Multi-Zone Backbones
Multiple zones in one cable between panel and floors.
Addressable Loop Risers
Multi-loop buildings needing one riser cable.
Sounder Circuits Multi-sounder buildings with riser distribution.
Panel-to-Repeater Links Network / RS-485 between panels.
OEM / ODM Customisation
As an OEM multi core fire alarm cable manufacturer, we build to your specification - core count (8/12/16/20/24 or custom), AWG, shielding, conductor colour sequence, jacket material and colour, print and packaging. Ideal for fire-safety brands and distributors needing private-label or project-specific bulk multi core fire alarm cable.
*Core count (2–24 or custom)
*Shielding: unscreened or foil + drain wire
*Conductor colour codes (BS EN or custom)
*Jacket material: LSZH or PVC; jacket colour (red, white, orange)
*Brand marking & sequential metre marking
*Reel / box packaging (305 m / 1000 ft standard)
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