BS 5839-1 Fire Alarm Fire Resistant Screened Control Cable
BS 5839-1 Fire Alarm Fire Resistant Screened Control Cable is a 300/500V overall-screened LSZH cable for fire-detection and fire-alarm circuits in and around buildings. The cable combines copper conductors, mica fire-resistant tape, silicone-rubber insulation, an aluminum/polyester screen with tinned-copper drain wire and a low-smoke zero-halogen outer sheath.
PRODUCT OVERVIEW
This 300/500V fire-resistant overall-screened control cable combines plain annealed copper conductors with a mica-glass fire-resistant tape and fire-resistant silicone-rubber insulation, an aluminum/polyester overall screen with tinned-copper drain wire, and a low-smoke zero-halogen outer sheath. The construction is designed to maintain circuit integrity during fire conditions while also providing an overall screen for control and signalling circuits.
For fire-detection and alarm applications, the product combines circuit-integrity capability with low-smoke, halogen-free materials and an overall screen. The fire-performance list includes BS 5839-1 Clause 26 2e together with IEC 60331-21, BS 6387 CWZ, BS 8434-2, EN 50200 PH120 and other referenced fire tests.
KEY FEATURES
- 300/500V fire-resistant screened control cable.
- Plain annealed copper conductors: solid Class 1 or stranded Class 2 to IEC/EN 60228.
- Mica-glass fire-resistant tape with fire-resistant silicone-rubber insulation type EI2.
- Aluminum/polyester overall screen with tinned-copper drain wire.
- Thermoplastic LSZH outer sheath type LTS3; thermosetting LSZH SW2-SW4 can be offered.
- PH120 mechanical-shock circuit-integrity reference in the product designation.
- Operating temperature: -30°C to +90°C; installation temperature: -20°C to +50°C.
- Minimum bending radius: 7.5 × overall diameter.
- Application reference: BS 5839-1 for fire detection and fire alarm systems.
- BS 5839-1 Clause 26 2e is listed within the circuit-integrity references.
FIRE DETECTION & ALARM FOCUS
In fire-detection and alarm systems, the cable must carry control and signalling functions while maintaining circuit integrity during the fire conditions specified by the project. The mica/silicone insulation system, LSZH sheath, screened construction and listed mechanical-shock / water-spray fire tests make this cable suitable for alarm-system routes where both fire survival and controlled emissions are important.
FIRE PERFORMANCE
Performance | Referenced Test / Standard |
Circuit integrity | IEC 60331-21; BS 6387 CWZ; DIN VDE 0472-814 (FE180); BS 8434-2 (120 min); BS 5839-1 Clause 26 2e; CEI 20-36/2-1; SS229-1; NBN C 30-004 (F3); NF C32-070-2.3 (CR1) |
Circuit integrity with mechanical shock | EN 50200 (PH120); CEI 20-36/4-0 |
Circuit integrity with mechanical shock & water spray | EN 50200 Annex E |
System circuit integrity | DIN 4102-12, E30 depending on lay system |
Flame retardance – single vertical wire | EN/IEC/BS EN 60332-1-2 and listed equivalents |
Reduced fire propagation – bundled cables | EN/IEC/BS EN 60332-3-24 (Cat. C) and listed equivalents |
Halogen free | IEC 60754-1 and listed equivalents |
No corrosive gas emission | IEC 60754-2 and listed equivalents |
Minimum smoke emission | IEC 61034-1&2 and listed equivalents |
No toxic gases | NES 02-713; NF C 20-454 |
PRODUCT APPLICATIONS
- Fire detection and fire alarm systems in and around buildings.
- Alarm loops and control circuits requiring fire-resistant screened construction.
- Fire-alarm control panels, interfaces and related building life-safety circuits.
- Projects requiring LSZH cable and documented circuit-integrity performance.
| Cores | Cross Section mm² | Insulation mm | Sheath mm | Overall Diameter mm | Approx. Weight kg/km |
|---|---|---|---|---|---|
| 2 | 1.0 | 0.6 | 0.9 | 7.9 | 85 |
| 2 | 1.5 | 0.7 | 0.9 | 8.8 | 105 |
| 2 | 2.5 | 0.8 | 1.0 | 10.2 | 150 |
| 2 | 1.5 | 0.7 | 0.9 | 9.2 | 110 |
| 2 | 2.5 | 0.8 | 1.0 | 10.3 | 155 |
| 2 | 4.0 | 0.8 | 1.1 | 12.2 | 220 |
| 3 | 1.0 | 0.6 | 0.9 | 8.4 | 105 |
| 3 | 1.5 | 0.7 | 0.9 | 9.3 | 130 |
| 3 | 2.5 | 0.8 | 1.0 | 10.8 | 190 |
| 3 | 1.5 | 0.7 | 0.9 | 9.4 | 135 |
| 3 | 2.5 | 0.8 | 1.0 | 10.9 | 190 |
| 3 | 4.0 | 0.8 | 1.1 | 13.0 | 280 |
| 4 | 1.0 | 0.6 | 1.0 | 9.3 | 125 |
| 4 | 1.5 | 0.7 | 1.0 | 10.3 | 165 |
| 4 | 2.5 | 0.8 | 1.1 | 12.0 | 240 |
| 4 | 1.5 | 0.7 | 1.0 | 10.5 | 170 |
| 4 | 2.5 | 0.8 | 1.1 | 12.1 | 250 |
| 4 | 4.0 | 0.8 | 1.2 | 14.4 | 350 |
| 7 | 1.0 | 0.6 | 1.0 | 10.5 | 175 |
| 7 | 1.5 | 0.7 | 1.1 | 12.1 | 230 |
| 12 | 1.0 | 0.6 | 1.1 | 14.5 | 300 |
| 12 | 1.5 | 0.7 | 1.2 | 16.0 | 380 |
| 19 | 1.0 | 0.6 | 1.2 | 17.5 | 470 |
| 19 | 1.5 | 0.7 | 1.3 | 17.5 | 470 |
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From Production to Delivery
From raw material preparation to final shipmen, every stage is caretuly controled to ensure consistent conductor quality, reliable pertormance,and sae delivery. Our roduction,
inspection, packaging, and logistics processes are managed in accordance with applicable standards and project requirements.
Production
Plain annealed copper conductors are prepared as solid Class 1 or stranded Class 2 constructions, wrapped with mica-glass fire-resistant tape, insulated with fire-resistant silicone rubber, cabled with fillers, screened with aluminum/polyester tape and a tinned-copper drain wire, then finished with the specified LSZH sheath.
Inspection
Inspection focuses on fire-resistant insulation, overall screen, drain/CPC arrangement, LSZH sheath, dielectric and insulation-resistance checks, cable dimensions and project-specified circuit-integrity documentation.
Packaging
Finished cables are wound onto suitable drums according to ordered size and length. Cable ends are secured and protected, and drum identification can include cable code, core count, conductor size, length and project reference.
Shipping
Before shipment, cable drums and accompanying technical documents are checked against the order and packing list. Test records, product identification and project documentation can be prepared according to customer requirements.
Frequently Asked Questions
What application does BS 5839-1 address here?
Fire detection and fire alarm systems in and around buildings.
Is BS 5839-1 the cable's basic design standard?
No. The source lists BS 7629-1 as the basic design standard and BS 5839-1 as the fire-alarm system application reference.
Is BS 5839-1 Clause 26 2e referenced?
Yes, it is listed under circuit-integrity performance.
What type of insulation is used?
Mica-glass fire-resistant tape covered by fire-resistant silicone-rubber compound type EI2.
What type of outer sheath is used?
Thermoplastic LSZH LTS3, with thermosetting LSZH SW2-SW4 available as an option.
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