Key Features
- Resettable after cooling
- Durable PVC outer sheath
- Built-in messenger wire
- Rapid heat response
- EN54 system compatible
Overview
The FyreLine Resettable PVC LHD Cable with Messenger Wire is a linear heat detection cable designed for reliable fire detection in industrial and outdoor environments.
The cable responds to rapid temperature rise or a defined alarm threshold and automatically resets once conditions return to normal, allowing continued operation without replacement.
A tough PVC outer sheath provides protection against moisture, dust and mechanical wear, making it suitable for harsh site conditions.
The integrated stainless steel messenger wire supports long spans and ensures secure fixing to structures such as pipe racks, conveyors and tank roofs. This construction maintains correct cable positioning, improves installation strength and delivers consistent thermal contact for fast and accurate fire detection across extended distances.
Cable Construction
Approvals
The FyreLine Resettable PVC LHD Cable with Messenger Wire is certified to BS EN54-28 for line type heat detectors, ensuring it meets recognised European standards for fire detection performance, reliability and environmental durability. This approval allows the cable to be used in life safety systems where compliance with EN54 fire standards is required.
Tech Specs
| Construction | Overall insulated, 4-core twisted with 100% coverage foil-shield and shield dump wire |
| Final Insulation | PVC |
| Wire Overall Diameter | 4.83mm (0.190 in) |
| Weight | 25.6 |
| Colour | Red |
| Minimum Bend Radius | 60mm (2.36 in) |
| Maximum Ambient Temperature | Dependent upon Alarm Temperature |
| Minimum Ambient Temperature | -40°C |
| Maximum Recoverable Temperature | +125°C |
| Continuous Operating HumidityRange | Ambient temperatures between -40°C to +40°C: 0% to 99% RHAmbient temperatures greater than +40°C): 0% to 75% RH |
| Minimum Zone Length | Class A1I/A2I and 54°C alarm settings: 50m/164ftAll other alarm settings: 30m/100ft |
| Maximum Zone Length | 500m/1640ft |
| EN54-22 Environmental Group | II |
| White Core Resistance Per Metre | Approx 17 Ω/m |
| Red Core Resistance Per Metre | Approx 3.3 Ω/m |
| Clear Core Resistance Per Metre(each) | Approx 0.1 Ω/m |