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Specialist fire protection at the point of risk
World leading linear heat detection systems, manufactured right here in the UK.
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Protecting Lives and Livelihoods – One Metre at a Time.
At Thermocable, we believe fire safety starts with understanding what’s at stake — not just the buildings, but the people inside them. For over 60 years, we’ve helped protect the environments that power our world, from solar farms and tunnels to data centres and oil tanks.
Our mission is simple: to make early fire detection effortless, reliable, and built to last. Discover how ProReact protects critical infrastructure across energy, transport, industrial, and commercial sectors.
Why Thermocable?
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Built for Tough Environments
ProReact Linear Heat Detection thrives where other systems struggle — dirty, damp, dusty, and hard-to-maintain spaces. It’s unaffected by airflow, chemicals, or debris, making it ideal for industrial and outdoor applications.
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Smart, Scalable Technology
Choose between Fixed Activation or Programmable Temperature Sensing. Our systems offer pinpoint accuracy, ambient temperature compensation, and pre-alarm functionality — all with minimal maintenance.
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Proven Performance, Global Trust
From rooftop solar arrays to hazardous oil tanks, ProReact has been independently validated to detect fires in seconds. It’s trusted by insurers, engineers, and emergency responders worldwide.
Download the ProReact Overview
(PDF, 4.09 MB)
Sectors we Protect
Thermocable’s ProReact Linear Heat Detection systems are trusted across industries to protect people, assets, and critical infrastructure in environments where traditional fire detection methods fall short.
ProReact Linear Heat Detection: Two Powerful Technologies, One Shared Purpose
Thermocable’s ProReact range offers two distinct types of linear heat detection — each designed to meet the unique demands of different environments and applications.
Programmable Temperature Sensing (Resettable)
Smart, adaptive, and reusable.
This four-core cable continuously monitors resistance changes along its length, allowing for precise temperature tracking and early warning capabilities. It’s ideal for environments where gradual temperature changes or rate-of-rise scenarios are common — such as tunnels, car parks, and solar PV installations.
Discover how smart sensing can protect complex environments with minimal disruption.
Explore Programmable Temperature SensingFixed Activation (Non-Resettable)
Simple, fast, and pinpoint accurate.
This two-core cable uses a temperature-sensitive polymer that melts at a predefined threshold (e.g., 68°C, 78°C, 88°C, 105°C, or 185°C), triggering an irreversible alarm. It’s perfect for high-risk, long-distance applications where rapid detection is critical.
Learn how pinpoint detection and fast response protect high-risk assets.
Explore Fixed Activation Solutions
Our People-First Culture
We’re proud of our Yorkshire roots and the team spirit that drives Thermocable forward. As part of the Halma Group, we’re investing in talent, expanding globally, and staying true to our values: innovation, integrity, and impact.
Our people are the reason we’ve grown from a local manufacturer to a global leader in linear heat detection. And they’re the reason we’ll keep growing.
Explore careers at Thermocable and be part of our growth journey.
Heritage Meets Innovation
Thermocable has been protecting lives and assets for over 60 years. Our legacy is built on trust, quality, and a relentless drive to improve.
Today, we’re pushing boundaries with smarter sensing, better materials, and more sustainable practices.
Learn how our heritage shapes our future.
Let’s build safer environments together.
