Jiaxing Doublewin Cable Co., Ltd. is one of the most reliable manufacturers and suppliers of low voltage fire alarm cable in China. If you're going to wholesale bulk low voltage 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.
Low Voltage Fire Alarm Cable is a dedicated signal cable built for fire alarm and smoke detection systems. It transmits low-voltage signals between fire control panels, smoke detectors, heat detectors, alarm buzzers and emergency notification devices. This fire-rated cable maintains stable circuit performance under fire conditions. We offer two sheath options: PVC and LSZH. The LSZH version emits minimal smoke and zero halogen toxic gas when burned, making it ideal for densely occupied public buildings. The cable uses high-purity bare copper conductors, available in solid or stranded constructions. Standard configurations include 2 core and 4 core to fit different fire alarm system designs. We are a professional cable manufacturer based in Zhejiang, China. All our low voltage fire alarm cables are produced under ISO9001 quality management system. We provide bulk wholesale, custom cable marking, custom wooden reel packing and full OEM services for fire alarm system integrators, engineering contractors and global distributors.
✓Conductors: Copper conductors in solid or stranded configurations, depending on the product design.
✓ Insulation: PVC or LSZH
✓Core identification: Color-coded conductors
✓ Shielding: Optional (Foil, braid)
✓Outer sheath: PVC or LSZH
✓Packing : 100m/305m in Reel , spool , box
Key Features of Low Voltage Fire Alarm Cable
1. Reliable Signal and Control Connections
Low voltage fire alarm cable provides stable conductive paths for fire detection and alarm circuits. It consistently transmits signals between fire alarm control panels, smoke detectors, heat detectors and alarm notification devices.
2. Shielded and Unshielded Configurations
We supply both shielded and unshielded fire alarm cables. Shielded types block electromagnetic interference for wiring near power cables or heavy machinery; unshielded versions are cost-effective for standard indoor installations.
3. Multiple Core Configurations
Various core options such as 2 core, 4 core, 6 core fire alarm cables. Different core counts match diverse circuit layouts and meet different on-site installation requirements.
4. PVC and LSZH Material Options
You can select PVC or LSZH outer sheath based on your project specifications. LSZH jacket releases low smoke and zero halogen corrosive gas during fire, ideal for public buildings, tunnels and crowded spaces. PVC jacket delivers good flame retardant performance with competitive cost.
5. Fire Performance Options
Low voltage fire alarm cables have two fire-rated options: flame retardant type to stop flame spreading, and fire resistant type to maintain circuit operation for a set time under fire exposure. Each type follows corresponding fire safety standards with dedicated cable construction.
Low Voltage Fire Alarm Cable Technical Specifications
Manufactured at our Haiyan, Zhejiang factory complying with ISO 9001:2015 standards. This low voltage fire alarm cable supports custom jacket materials, colors and construction to meet different fire safety project specifications.
| Product Name | Low Voltage Fire Alarm Cable | ||
|---|---|---|---|
|
PH30 / PH60 / PH120 per EN 50200; IEC 60331; BS 6387 CWZ | ||
| CPR EN 50575 Class | Cca(standard); B2ca (on request) | ||
| Core Counts | 2 core / 4 core | ||
| Conductor Sizes | 4*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 | ||
| Shielding | Al foil + drain wire, or tinned CU braid | ||
| Drain Wire | Tinned copper | ||
| Jacket color | Red (standard); white, orange, custom on request | ||
| Jacket Material | PVC or LSZH,flame retardant | ||
| Rated Voltage | 300/500 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 |
| Number of Cores | Nominal cross section Conductor (mm²) | Nominal jacket outer diameter(mm) | Cable Weight(kg/km) | Conductor resistance at 20°C(Ohm/km) |
| 2 |
0.8 |
5.7 | 47.5 | 23.8 |
| 2 | 1.0 | 6.1 | 52 | 19.5 |
| 2 | 1.5 | 7.1 | 70 | 13.3 |
| 2 | 2.5 | 8.3 | 98.5 | 7.98 |
| 4 | 0.8 | 6.7 | 76.5 | 23.8 |
| 4 | 1.0 | 7.2 | 85.6 | 19.5 |
| 4 | 1.5 | 8.1 | 116 | 13.3 |
| 4 | 2.5 | 10.4 | 185 | 7.98 |
Why Low Voltage Matters in a Fire Alarm Cable
A fire alarm system is a low voltage system by design. A low voltage fire alarm cable is built for those 12V / 24V DC circuits - the wiring that runs between the control panel and the detectors, call points, sounders and beacons. Two numbers matter, and they are not the same. The operating voltage is 12V or 24V DC: that is what the panel actually pushes through the cable. The cable rating is 300/500V: that is the insulation withstand for which the cable is type-tested, giving a huge safety margin over the working voltage. Because the circuit is low voltage and power-limited (NEC Class 2/3, IEC extra-low voltage), it can be installed without the earthing and isolating precautions of mains wiring, yet still meets the fire performance and circuit-integrity requirements of BS 5839-1, EN 54 and NFPA 72. Get the conductor size right - low voltage makes voltage drop the critical design factor - and the cable performs reliably for the life of the building.
12/24V DC Circuits
Built for the actual operating voltage of fire alarm systems.
300/500V Rated
High dielectric margin over the working voltage.
Power-Limited
NEC Class 2/3; IEC extra-low voltage (ELV).
Safe to Install
No mains earthing or isolation needed.
Voltage-Drop Sized
1.5–2.5 mm² for long sounder runs.
Fire-Rated Options
PH30/60/120 for circuits that must survive.
Low Voltage Fire Alarm Cable - Voltage Class Guide
Three voltage concepts are often confused. Keeping them separate is the key to specifying a low voltage fire alarm cable correctly.
300/500V
Cable insulation rating
The type-tested insulation withstand of the cable itself. It is the number printed on the jacket and it is deliberately far above the working voltage, giving dielectric safety margin.
12 / 24V DC
Operating voltage
The actual voltage the fire alarm panel delivers to detectors, loops and sounders. Most systems are 24V DC; small or legacy systems are 12V DC. Both use the same 300/500V cable.
Class 2 / 3
NEC power-limited
Article 725 classes where energy is capped so a fault cannot start a fire - Class 2 to 150V, Class 3 to 300V. Fire alarm circuits are power-limited, which allows lighter installation.
Quick voltage selector
• Standard fire alarm system → 24V DC operating, 300/500V cable rating
• Small / legacy system → 12V DC operating, same 300/500V cable
• North America, power-limited circuit → NEC Class 2 or Class 3
• Europe / IEC jurisdiction → extra-low voltage (ELV) fire alarm circuit
• Long sounder run on 24V → upsize to 1.5–2.5 mm² to control voltage drop
Jacket Grade Selection Guide
• PVC: General indoor, non-life-safety signal wiring.
• LSZH: Public buildings, schools, hospitals - low smoke, zero halogen.
• Fire-resistant PH30: Sounder circuits, 30 min integrity.
• Fire-resistant PH60/120 (BS EN 50200): Evacuation, lift, smoke extraction - 60–120 min.
Applications of Low Voltage Fire Alarm Cable
The correct cable must be selected according to the applicable building codes, fire safety regulations, system design, and project specifications.
Commercial Buildings
ow voltage fire alarm cable serves fire detection and alarm systems for offices, retail malls, hotels, restaurants and all types of commercial premises.
Residential Buildings
This fire alarm cable is designed for fire safety systems inside apartment blocks and multi-family residential housing projects.
Industrial Facilities
Factories, warehouses and manufacturing plants adopt this fire alarm cable for fire detection and alarm signal circuits.
Hospitals and Healthcare Facilities
Healthcare buildings enforce strict fire safety standards. Our fire alarm cable meets special requirements for fire signal transmission and low-smoke material performance in medical areas.
Transportation and Infrastructure
Stations, terminals, tunnels, and other infrastructure projects may impose specific requirements for smoke emission, halogen content, flame propagation, or circuit integrity.
Fire Alarm System Integration
Fire alarm contractors and system integrators use this cable to connect smoke/heat detectors, manual call points, control panels and all related fire alarm system components.
Why Choose our Low Voltage Fire Alarm Cable
Manufacturing Process – Precision & Quality Control
Our Low Voltage Fire Alarm Cable is produced under strict quality control to ensure stable performance and long-term reliability in fire alarm systems.
Custom Color Options
In addition to the standard red color, we offer custom color options for your specific needs. Choose from a wide range of colors to match your design specifications, branding, or to meet particular project requirements.
Contact us for more details on custom color options.
Product packaging
Designed for safe transport and easy installation, our Low Voltage Fire Alarm Cable comes with reliable and flexible packaging.
* Standard Rolls: 100m / 305m (1000ft), easy to handle and install
* Wooden Drums / Plastic Reels: Ideal for bulk orders and long-distance shipping
* Strong Protection: Moisture-proof and impact-resistant packaging to prevent damage
* Custom Length Available: Reduce waste and improve efficiency
* OEM Support: Custom logo and packaging design available
✔ Safe Delivery
✔ Easy Installation
✔ Customizable for Your Brand
Q: What is low voltage fire alarm cable used for?
A:Low voltage fire alarm cable transmits alarm signals within fire detection systems. It connects detectors, manual call points, fire alarm control panels and all other fire safety system components. It is built to satisfy the electrical and performance requirements of fire alarm systems.
Q: What voltage rating does low voltage fire alarm cable have?
A:Our low voltage fire alarm cable is rated at 300/500V. Different specifications are available to match various system designs, standards and installation environments. Check our technical datasheet for the exact voltage rating of each cable model.
Q: What is the difference between shielded and unshielded fire alarm cable?
A:Shielded fire alarm cable is fitted with a conductive shielding layer to block electromagnetic interference, ideal for installations close to power cables or machinery. Unshielded fire alarm cable has no shielding layer, offering a cost-effective solution for standard indoor fire alarm wiring. You can select the construction based on your electromagnetic environment and installation needs.
Q:Is low voltage fire alarm cable fire-resistant?
A:Low voltage only defines the electrical rating, it does not equal fire resistance. We supply two grades: standard flame retardant low voltage fire alarm cable, and fire-resistant low voltage fire alarm cable. Fire-resistant models maintain circuit integrity for a set duration under fire conditions, verified by standard fire tests.
Q: What is the difference between flame-retardant and fire-resistant cable?
A:Flame-retardant cable restricts flame spread and stops fire from propagating along the cable. Fire-resistant cable continues working and keeps the circuit energized for a specified period while exposed to fire. Each type complies with corresponding international fire safety standards.
Q:What core counts are available?
A:We supply low voltage fire alarm cable in 2 core, 4 core, 6 core and more multi-core options. Custom core configurations are available upon request to fit your project wiring design.
We welcome inquiries from international distributors, importers, fire alarm system integrators, electrical contractors, and OEM customers.
Share your required conductor size, core count, shielding construction, insulation material, applicable standards, estimated order quantity, and destination market.
Our team can review your requirements and discuss suitable cable configurations, technical documentation, customization options, and supply arrangements.
Contact us today for low voltage fire alarm cable specifications, bulk pricing, OEM cooperation, and product documentation.
Our address
No.2288 Junyuan Road, Haiyan City, Zhejiang Province, China
Phone Number
0086 13758360692
Rita@doublewincables.com
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