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24V (EN54) Power Supplies
24V EN54-compliant power supplies are a vital component in fire alarm and life safety systems, designed to deliver a regulated and monitored power source that supports the operation of control panels, sounders, interface units, and auxiliary equipment. At Firesense, we offer a wide range of 24V EN54-4 certified power supply units (PSUs) from trusted manufacturers including Elmdene, C-TEC, and Kentec, ensuring reliable performance and full compliance with UK and European fire safety standards.
These power supplies are built in accordance with EN54-4, the standard that governs power supply equipment used in fire detection and fire alarm systems. This ensures that every unit provides not only regulated 24V DC output, but also incorporates fault monitoring, battery charging capabilities, and automatic switchover to backup power in the event of mains failure.
Our selection includes units with varying current ratings to suit a broad range of installation sizes and requirements:
Elmdene EN54-4 PSUs are available in 1A, 2A, and 5A variants, with both standard and large enclosures. These are robust, steel-cased units ideal for supporting localised zones or entire fire alarm systems. They include built-in diagnostics, LED indicators, and space for backup batteries, making them a reliable choice for both new installations and system upgrades.
C-TEC EN54-4 power supplies range from 1.5A to 5A, with both standard boxed and open-frame caged variants available. These are suited for integration into larger enclosures or fire alarm panels, offering a compact and flexible solution for systems requiring dependable power and intelligent battery monitoring.
Kentec EN54-4 Syncro-style PSUs offer outputs of 2.5A and 5.25A, designed specifically for use with Kentec fire alarm panels and compatible systems. These units offer the same high level of performance and compliance, with advanced features such as battery deep-discharge protection and fault relays.
All of our 24V EN54 power supply units support connection to sealed lead acid (SLA) backup batteries and include automatic battery testing and fault indication. Cable entries, terminal blocks, and mounting options are designed with installer convenience in mind, ensuring easy integration into a range of system types and configurations.
Whether you're powering a single-loop fire panel, a bank of sounders, or an auxiliary system such as an extinguishant release or interface module, Firesense has a suitable EN54-4 power supply solution to match your project’s needs.
For help selecting the right PSU or ensuring compatibility with your existing equipment, get in touch with our technical team—we’re here to support your fire system power requirements with compliant, trusted solutions.