| Category | Fire Resistant Instrumentation Cable, Shielded, LSZH, 2×1.0mm² (18AWG) |
| Conductor | 2-core stranded bare copper, twisted pair |
| Shield | Polyester tape + aluminum foil, 100% coverage, tinned copper drain wire |
| Jacket | LSZH (Low Smoke Zero Halogen), Orange |
| Standards | IEC 60331-1, IEC 60332-1, CNS 11175, EN 50200, EN 61034-2, BS 5839-1, BS 6387 |
| Certifications | ISO 9001, RoHS Compliant |
| Packaging | 500m per reel, footage markers on jacket |
Heizka’s Fire Resistant Cable Shielded, LSZH 2×1.0mm² is a halogen-free, flame-retardant instrumentation cable engineered for fire alarm systems, signaling devices, and electronic equipment where circuit integrity and low-smoke performance are critical during a fire event. Built around a 2-core stranded bare copper conductor with silicone insulation and a 100%-coverage polyester tape and aluminum foil shield, it delivers reliable signal transmission with strong EMI protection for indoor and residential installations.
The LSZH (Low Smoke Zero Halogen) jacket keeps toxic gas and smoke emission to a minimum in the event of fire, protecting people and sensitive equipment during evacuation and emergency response. Every reel is manufactured and tested to IEC 60331-1 and IEC 60332-1 fire-resistance and flame-retardance standards, and backed by Heizka’s multi-year warranty for long-term field performance.
Features
- ✓Halogen-free, flame-retardant LSZH jacket minimizes toxic smoke and gas emission in fire conditions
- ✓100%-coverage polyester tape and aluminum foil shield with drain wire for reliable EMI/noise protection
- ✓Silicone insulation maintains performance and flexibility across a wide operating temperature range
- ✓Footage markers printed on the jacket for easy length tracking during installation
- ✓Compact 2×1.0mm² (18AWG) twisted pair construction for space-constrained conduit and tray runs
- ✓Rated 300V for fire alarm, signaling, and electronic equipment circuits
- ✓Designed in the USA
Standard Compliance
IEC 60332-1 (Flame Propagation)
CNS 11175
EN 50200 (Fire Resistance, Alarm Circuits)
EN 61034-2 (Smoke Density)
BS 5839-1
BS 6387 (Fire Resistance Characteristics)
Ordering Information
| Item # | Description |
|---|---|
| HER10S2LZ | Fire Resistant Instrumentation Cable 2×1.0mm² (18AWG), Shielded, Twisted Pair, Orange, 500m, LSZH |
Technical Specifications
The tables below summarize the full construction and performance data for this Fire Resistant Cable Shielded LSZH product, sourced directly from Heizka’s technical catalogue.
Construction
| No. of code | 2 Core |
| Conductor material | Stranded bare copper |
| Conductor construction | 1.0mm²; 16/0.24 ± 1%D mm (as printed in catalogue) |
| Insulation material | Silicone insulation |
| Insulation coverage rate | 100% |
| Insulation thickness | 0.5mm ± 0.05mm |
| Insulation diameter | 2.1 ± 0.10 mm |
| Shield material | Polyester tape + aluminum foil |
| Shield coverage rate | 100% |
| Shield drain wire | 7/0.18TCmm |
| Jacket material | LSZH (Orange) |
| Jacket thickness | 0.7mm ± 0.1mm |
| Jacket diameter | 5.7 ± 0.3mm |
Electrical & Mechanical Characteristics
| Max. conductor DC resistance, 20°C | 21.4 ohms/km |
| Dielectric strength (insulation) | 2000V |
| Capacitance | 98 ± 3 pF/m |
| Capacitance (conductors + shield) | 141 ± 3 pF/m |
| Operating temperature | -20°C ~ +200°C |
| Elongation at break | 150% |
| Tensile strength | 10N/mm² |
| Rated voltage | 300V |
Fire Resistant Cable Shielded LSZH — 2×1.0mm² vs 2×1.5mm² vs 2×2.5mm²
| Feature | 2×1.0mm² (This product) | 2×1.5mm² | 2×2.5mm² |
|---|---|---|---|
| Item # | HER10S2LZ | HER15S2LZ | HER25S2LZ |
| Conductor construction | 1.0mm²; 16/0.24 ± 1%D mm | 1.5mm²; 30/0.24 ± 1%D mm | 2.5mm²; 49/0.24 ± 1%D mm |
| Insulation diameter | 2.1 ± 0.10 mm | 2.5 ± 0.10 mm | 3.1 ± 0.10 mm |
| Jacket diameter | 5.7 ± 0.3mm | 6.7 ± 0.3mm | 8.1 ± 0.3mm |
| Max. conductor DC resistance, 20°C | 21.4 ohms/km | 12.33 ohms/km | 7.98 ohms/km |
| Operating temperature | -20°C ~ +200°C | -20°C ~ +200°C | -20°C ~ +200°C |
| Best for | Compact fire alarm & signaling runs in tight conduit/tray space | Mid-length fire alarm circuits needing lower loop resistance | Longer fire alarm circuit runs where voltage drop is a concern |
Frequently Asked Questions
This Fire Resistant Cable Shielded LSZH is designed for fire alarm systems, signaling devices, and electronic equipment in indoor and residential installations where reliable signal transmission and fire safety are both required.
LSZH stands for Low Smoke Zero Halogen. In a fire, the jacket emits minimal smoke and no halogen gases, reducing toxicity and visibility loss so occupants can evacuate safely and equipment is protected from corrosive fumes.
Yes. It uses a 100%-coverage polyester tape and aluminum foil shield with a drain wire, which protects the signal from electromagnetic interference — important when the cable is routed near power wiring or other EMI sources.
It refers to a 2-conductor (twisted pair) cable with a nominal 1.0mm² (18AWG) stranded bare copper conductor size per core, suited to shorter fire alarm and signaling circuit runs.
It is rated for operation from -20°C to 200°C and a maximum voltage of 300V, suitable for typical indoor fire alarm and signaling circuits.
Heizka Cable — Designed in the USA, distributed in 20+ countries worldwide.
