Cases & enclosures T
he UK’s data centre sector is growing rapidly. Estimates suggest there are over 500 data centres across the UK, with a recent report forecasting that spending will increase to £10bn per year by 2029, a ten-fold increase over five years. This boom is driven by cloud computing and the heralded introduction of AI, and modern society’s reliance on this high-value infrastructure means that its protection is vital.
In a data centre, fire risks are heightened due to the volume of electrical connections and their load, supporting dense server arrays, extensive cabling, and backup power. As a result, electrical faults, overheating components, or battery failures are just some of the potential causes of ignition, and a fire in a data centre can have outsized consequences. Even a confined incident could damage components and force downtime, but if a serious fire takes hold, the potential for data loss, reputational damage, and human safety could lead to far more serious consequences.
FIRE PROTECTION IS KEY
With high-value stakes, data centre designers go to great lengths to minimise the potential of fire ignition, supported by optimum detectors and effective suppression systems. Even so, it’s impossible to guarantee fire prevention for every connection across hundreds of high-power server racks. In the event of a fire, it is vital to protect the electrical junctions that supply essential facilities such as emergency lighting and backup power, plus additional systems where maintaining a power supply is critical. Protecting these connections during the outbreak of a fire will not only help to maintain operations, but can also be crucial to support evacuation and rapid fire suppression. While concrete provides high resistance as a fire barrier, it is inherently inflexible. This is a challenge when managing electrical supply and connections in any modern building, but
DATA CENTRES AND THE FIRE HAZARD: WHY FIRE PROTECTION ENCLOSURES ARE ESSENTIAL
As UK data centre capacity continues to expand, ensuring electrical resilience under fire conditions is an important design priority. Fire protection enclosures play a vital role in maintaining circuit integrity in the event of a fire, helping facilities sustain safe operation and supporting a controlled shutdown during an incident, as well as assisting safe evacuation and fire suppression. To achieve this, modern polycarbonate fire protection enclosures combine certified fire performance with fast and flexible installation. Chris Lloyd, managing director at Spelsberg UK, explains.
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April 2026 Instrumentation Monthly
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