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ProReact Linear Heat Detection for Solar Photovoltaic
Protecting what’s above you. Why Solar PV Systems Require Proactive Fire Detection
Solar photovoltaic (PV) systems are transforming rooftops and landscapes into clean energy assets. But with this innovation comes a new set of fire safety challenges. Whether installed on commercial rooftops, integrated into building structures, or deployed in ground-mounted arrays, PV systems are exposed to environmental stressors and electrical risks that can compromise safety.
UL Approved System for Solar
EN Approved System for Solar
ProReact Fixed Activation
Preset alarm temps. Tough cable. Reliable fire safety.
- UL and FM approved
- CE, RoHS, and UKCA certified
- PVC, Nylon or Stainless Steel Braided
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ProReact Fixed Activation (EN)
Preset alarm temps. Tough cable. Reliable fire safety.
- EN and FM approved
- CE, RoHS, and UKCA certified
- PVC, Nylon or Stainless Steel Braided
Common Fire Risks in Solar PV Installations
- Electrical Failures
Loose connections, degraded wiring, and inverter faults can lead to arcing, short circuits, and ignition. - Overheating & Hotspots
Dust, debris, or shading can cause localised temperature spikes, increasing fire risk. - Combustible Roofing Materials
Wood, insulation, or membrane materials can accelerate fire spread. - Battery Storage Hazards
Thermal runaway, electrolyte leakage, and electrical shorts pose serious risks. - Environmental Factors
Extreme heat, lightning, and vegetation debris can trigger external ignition.
These risks are amplified in high-value environments like data centres, logistics hubs, and industrial rooftops—where a single fire event can result in significant operational and financial loss.
The ProReact Solution
Thermocable’s ProReact Linear Heat Detection (LHD) systems are engineered to meet the unique demands of solar PV environments, offering early, reliable, and continuous fire detection across the entire array.
Continuous Monitoring Across the Array
ProReact LHD detects heat anywhere along its length, providing full coverage across panels, cabling, inverters, and battery systems. This ensures no blind spots and enables rapid response to emerging threats.
ProReact - Photovoltaic Array Overheat & Fire Detection
(PDF, 1.16 MB)
Smart Detection Technologies
- ProReact Programmable Temperature Sensing
- Offers rate-of-rise detection, ambient temperature compensation, and pre-alarm functionality.
- Ideal for dynamic rooftop environments where early warning is critical.
- ProReact Fixed Temperature Activation
- Triggers an alarm at a set temperature (e.g., 100°C), providing pinpoint accuracy in high-risk zones.
- Recommended by FM Global for installation both on the roof cover and beneath PV modules.
Built for Harsh Conditions
- Low Smoke Zero Halogen (LSZH) and 316 stainless steel braid options provide UV resistance, mechanical durability, and corrosion protection—perfect for outdoor solar installations.
- Proven in independent testing to detect fires in under one minute, with the fastest response recorded at just 11 seconds.
Flexible Installation for Solar Panels
- Mounting options include J-Lock Clips, P-Clips, and stainless-steel cable ties with silicone sheaths—designed for secure, abrasion-free installation on PV module bracketry.
- Zone configuration allows for scalable protection, with one or two detection zones per panel bank depending on redundancy needs.
Certified for Confidence
ProReact LHD systems meet global standards:
- EN54-22
- EN54-28
- UL & cUL
- VdS
- FM Approved (PVC cables)
These certifications ensure compliance and performance across international markets and demanding applications.
Real-World Benefits in Solar PV Systems
- Rapid Detection: Early warning prevents escalation and enables swift intervention.
- Reduced Downtime: Fewer false alarms and faster response times protect uptime.
- Long-Term Reliability: Durable construction resists environmental degradation.
- Scalable Integration: Suitable for rooftop, building-integrated, and ground-mounted PV systems.
