Special Wire and Cable > Fire-Resistant Cable
Fire-Resistant RS485 Data Cable
Designed as a circuit-integrity wiring cable for fire alarm systems, this fire-resistant RS485 data cable is compatible with all leading connection systems complying with EN 50173. Available in 1, 2 or 4-pair versions, it continues transmitting data even when directly exposed to fire, while its low-capacitance insulation supports high-speed, interference-free data transmission.
Four shielding configurations are available — single overall screen, double overall screen, individual + overall screen (PiMF), and braided overall screen — to match different EMC and installation requirements, all sharing the same fire performance and LSZH sheath construction.
Key Features
Circuit Integrity Under Fire
Continues transmitting data even when directly exposed to fire, complying with IEC 60331-21, BS 6387 CWZ and DIN VDE 0472-814 (FE180).
Low Smoke Zero Halogen
LSZH sheath per BS 7652 §6.1 LTS3 class, with low halogen and corrosive gas emission for use in occupied buildings.
Four Shielding Configurations
Single overall screen, double overall screen, individual + overall screen (PiMF), and braided overall screen options available.
EN 50173 Compatible
Compatible with all leading structured cabling connection systems complying with EN 50173.
Low-Capacitance Design
Low mutual capacitance construction (45nF/km core-to-core) supports high-speed, interference-free RS485 data transmission.
Dual CE & UL Certification
Certified to both European CE and North American UL standards for global fire alarm and BMS project compliance.
OEM & ODM Capabilities
Custom Shielding Configuration
Choose from single overall screen, double overall screen, individual + overall screen (PiMF), or braided overall screen constructions.
Custom Pair Count
Available in 1, 2 or 4-pair versions to match your fire alarm and BMS system wiring requirements.
Custom Conductor Size
Available in 0.22, 0.50, 0.75 and 1.00mm² conductor sizes across all shielding configurations.
Multi-Standard Compliance Support
Engineering support to align cable selection with country-specific fire, smoke and toxicity standards for your project.
Custom Length & Reel Packaging
Supplied in custom cut lengths and reel/coil packaging configurations to suit project logistics needs.
Private Labeling & Branding
OEM/ODM packaging, reel labeling and documentation support available for distributors and fire system contractors.
Technical Specifications
| Conductor | Tinned copper wire, stranded, per IEC(EN) 60228 class 2 |
|---|---|
| Insulation | Polyethylene wrapped with mica tape, or silicone rubber-insulated polyethylene |
| Pair Twisting | Different lay lengths per pair to minimize crosstalk; 4 cores per twisted-pair group; suitable non-hygroscopic filler in the same concentric layer |
| Armour | None (all 4 variants) |
| Outer Sheath | Thermoplastic per BS 7652 §6.1, LSZH compound LTS3 class (also referenced as SW2-SW4 type), black |
| Operating Temperature (Fixed) | -20°C ~ +90°C |
| Operating Temperature (Flexing) | -5°C ~ +60°C |
| Min. Bending Radius | 8 × OD |
| Dielectric Test | 1000V r.m.s. for 5 min (core-to-core); 1000V r.m.s. for 5 min (core-to-screen) |
| Resistance | 120Ω |
| Capacitance | 45nF/km (conductor-to-conductor); 90nF/km (conductor-to-screen) |
| Certification | Dual certified: EU CE, North America UL |
| Resistance | 120Ω |
|---|---|
| Capacitance | 45nF/km (core-core) |
| Min. Bend Radius | 8 × OD |
| Certification | CE + UL |
| No. of Pairs | Nominal Cross-Section (mm²) | No. of Strands / Nominal Diameter | Nominal Insulation Thickness (mm) | Nominal Sheath Thickness (mm) | Nominal OD (mm) | Nominal Weight (kg/km) |
|---|---|---|---|---|---|---|
| 1 | 0.22 | 7/0.2 | 0.65 | 0.8 | 5.7 | 43 |
| 2 | 0.22 | 7/0.2 | 0.65 | 0.8 | 9.6 | 83 |
| 4 | 0.22 | 7/0.2 | 0.65 | 0.8 | 11.2 | 131 |
| 1 | 0.50 | 16/0.2 | 0.65 | 0.8 | 6.3 | 59 |
| 2 | 0.50 | 16/0.2 | 0.65 | 0.8 | 10.8 | 117 |
| 4 | 0.50 | 16/0.2 | 0.65 | 0.8 | 12.7 | 192 |
| 1 | 0.75 | 24/0.2 | 0.65 | 0.8 | 6.8 | 73 |
| 2 | 0.75 | 24/0.2 | 0.65 | 0.8 | 11.8 | 151 |
| 4 | 0.75 | 24/0.2 | 0.65 | 0.8 | 13.8 | 253 |
| 1 | 1.00 | 32/0.2 | 0.65 | 0.8 | 7.2 | 96 |
| 2 | 1.00 | 32/0.2 | 0.65 | 0.8 | 12.3 | 195 |
| 4 | 1.00 | 32/0.2 | 0.65 | 0.8 | 14.5 | 313 |
| No. of Pairs | Nominal Cross-Section (mm²) | No. of Strands / Nominal Diameter | Nominal Insulation Thickness (mm) | Nominal Sheath Thickness (mm) | Nominal OD (mm) | Nominal Weight (kg/km) |
|---|---|---|---|---|---|---|
| 1 | 0.22 | 7/0.2 | 0.65 | 0.8 | 6.2 | 60 |
| 2 | 0.22 | 7/0.2 | 0.65 | 0.8 | 10.1 | 115 |
| 4 | 0.22 | 7/0.2 | 0.65 | 0.8 | 11.7 | 169 |
| 1 | 0.50 | 16/0.2 | 0.65 | 0.8 | 6.8 | 78 |
| 2 | 0.50 | 16/0.2 | 0.65 | 0.8 | 11.3 | 154 |
| 4 | 0.50 | 16/0.2 | 0.65 | 0.8 | 13.2 | 236 |
| 1 | 0.75 | 24/0.2 | 0.65 | 0.8 | 7.3 | 95 |
| 2 | 0.75 | 24/0.2 | 0.65 | 0.8 | 12.2 | 191 |
| 4 | 0.75 | 24/0.2 | 0.65 | 0.8 | 14.3 | 300 |
| 1 | 1.00 | 32/0.2 | 0.65 | 0.8 | 7.4 | 101 |
| 2 | 1.00 | 32/0.2 | 0.65 | 0.8 | 12.5 | 204 |
| 4 | 1.00 | 32/0.2 | 0.65 | 0.8 | 14.7 | 326 |
| No. of Pairs | Nominal Cross-Section (mm²) | No. of Strands / Nominal Diameter | Nominal Insulation Thickness (mm) | Nominal Sheath Thickness (mm) | Nominal OD (mm) | Nominal Weight (kg/km) |
|---|---|---|---|---|---|---|
| 1 | 0.22 | 7/0.2 | 0.65 | 0.8 | 6.10 | 61 |
| 2 | 0.22 | 7/0.2 | 0.65 | 0.8 | 10.1 | 118 |
| 4 | 0.22 | 7/0.2 | 0.65 | 0.8 | 11.8 | 179 |
| 1 | 0.50 | 16/0.2 | 0.65 | 0.8 | 6.70 | 79 |
| 2 | 0.50 | 16/0.2 | 0.65 | 0.8 | 11.3 | 158 |
| 4 | 0.50 | 16/0.2 | 0.65 | 0.8 | 13.2 | 248 |
| 1 | 0.75 | 24/0.2 | 0.65 | 0.8 | 7.20 | 96 |
| 2 | 0.75 | 24/0.2 | 0.65 | 0.8 | 12.2 | 195 |
| 4 | 0.75 | 24/0.2 | 0.65 | 0.8 | 14.4 | 314 |
| 1 | 1.00 | 30/0.2 | 0.65 | 0.8 | 7.30 | 103 |
| 2 | 1.00 | 30/0.2 | 0.65 | 0.8 | 12.5 | 208 |
| 4 | 1.00 | 30/0.2 | 0.65 | 0.8 | 14.7 | 338 |
| No. of Pairs | Nominal Cross-Section (mm²) | No. of Strands / Nominal Diameter | Nominal Insulation Thickness (mm) | Nominal Sheath Thickness (mm) | Nominal OD (mm) | Nominal Weight (kg/km) |
|---|---|---|---|---|---|---|
| 1 | 0.22 | 7/0.2 | 0.65 | 0.8 | 6.0 | 56 |
| 2 | 0.22 | 7/0.2 | 0.65 | 0.8 | 9.9 | 108 |
| 4 | 0.22 | 7/0.2 | 0.65 | 0.8 | 11.5 | 161 |
| 1 | 0.50 | 16/0.2 | 0.65 | 0.8 | 6.6 | 74 |
| 2 | 0.50 | 16/0.2 | 0.65 | 0.8 | 11.1 | 146 |
| 4 | 0.50 | 16/0.2 | 0.65 | 0.8 | 13.0 | 227 |
| 1 | 0.75 | 24/0.2 | 0.65 | 0.8 | 7.7 | 90 |
| 2 | 0.75 | 24/0.2 | 0.65 | 0.8 | 12.0 | 183 |
| 4 | 0.75 | 24/0.2 | 0.65 | 0.8 | 14.1 | 290 |
| 1 | 1.00 | 30/0.2 | 0.65 | 0.8 | 7.2 | 96 |
| 2 | 1.00 | 30/0.2 | 0.65 | 0.8 | 12.3 | 195 |
| 4 | 1.00 | 30/0.2 | 0.65 | 0.8 | 14.5 | 313 |
Construction & Configuration
Conductor
Tinned copper wire, stranded, complying with IEC(EN) 60228 class 2, common to all 4 shielding variants.
Insulation & Pair Twisting
Polyethylene wrapped with mica tape (or silicone rubber-insulated polyethylene), twisted with varying lay lengths per pair to minimize crosstalk, with non-hygroscopic filler.
Variant 1 — Overall Screen
RE-m02Y(ST)H-FR family: aluminum/polyester tape overall screen with tinned copper drain wire.
Variant 2 — Double Overall Screen
RE-02Y(ST)CH-FR: aluminum/polyester tape combined with an outer braided copper wire screen for enhanced EMC performance.
Variant 3 — Individual + Overall Screen (PiMF)
RE-02Y(ST)H pimf-FR: single-layer aluminum/polyester tape shielding each pair, plus a braided copper wire overall screen.
Variant 4 & Outer Sheath
RE-02YCH-FR uses a braided copper wire overall screen only. All variants share an LSZH outer sheath per BS 7652 §6.1 LTS3 class, with no armour layer.
Standards & Test Documentation
Fire Circuit Integrity Standards
IEC 60331-21; BS 6387 CWZ; DIN VDE 0472-814 (FE180); BS 8434-2 (120mins); BS 5839-1 Clause 26.2e; CEI 20-36/2-1; SS 229-1; NBN C 30-004 (cat. F3); NF C32-070-2.3 (CR1). Mechanical shock integrity: EN 50200 (PH120), CEI 20-36/4-0. Mechanical shock + water spray integrity: EN 50200 Annex E. System circuit integrity per installation system: DIN 4102-12, E30.
Flame Retardancy & Reduced Flame Spread
Single vertical cable flame test: EN/IEC/BS EN 60332-1-2; VDE 0482-332-1; NBN C 30-004 (cat. F1); NF C32-070-2.1 (C2); CEI 20-35/1-2; EN 50265-2-1*; DIN VDE 0482-265-2-1*. Bunched vertical cable flame spread reduction: EN/IEC/BS EN 60332-3-24 (cat. C); VDE 0482-332-3; NBN C 30-004 (cat. F2); NF C32-070-2.2 (C1); CEI 20-22/3-4; EN 50266-2-4*; DIN VDE 0482-266-2-4.
Halogen-Free, Low Smoke & Non-Toxic
Zero halogen: IEC 60754-1; EN 50267-2-1; DIN VDE 0482-267-2-1; CEI 20-37/2-1; BS 6425-1*. Non-corrosive gas emission: IEC 60754-2; EN 50267-2-2; DIN VDE 0482-267-2-2; CEI 20-37/2-2; BS 6425-2*. Minimum smoke emission: IEC/EN 61034-1&2; DIN VDE 0482-1034-1&2; CEI 20-37/3-1&2; EN 50268-1&2*; BS 7622-1&2*. Non-toxic gas: NES 02-713; NF C 20-454.
Dual CE & UL Certified
Certified to both European CE and North American UL standards, in addition to the full fire, smoke and toxicity performance suite listed above.
EN 50173 Structured Cabling Compatible
Compatible with all leading connection systems complying with EN 50173, supporting integration into standard fire alarm and building management wiring systems.
LSZH per BS 7652 §6.1
Outer sheath complies with BS 7652 §6.1 thermoplastic requirements, LSZH compound LTS3 class (also referenced as SW2-SW4 type).
Need Fire-Resistant RS485 Data Cable?
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