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Choosing the Right EN54-4 PSU for Fire Alarm Systems
Choosing the Right EN54-4 PSU for Fire Alarm Systems
24V EN54 Power Supplies
Choosing the Right EN54-4 PSU for Fire Alarm Systems
An EN54-4 power supply unit plays a vital role in modern fire alarm and life safety systems. Designed to provide regulated, battery-backed power, these units help ensure critical fire protection equipment continues operating during mains failures.
What Is an EN54-4 Power Supply?
EN54-4 is the European standard covering power supply equipment used within fire detection and fire alarm systems. Unlike standard power supplies, EN54-4 compliant units include battery charging, fault monitoring and automatic switchover capabilities.
24V Regulated Output
Provides a stable supply for fire alarm equipment and peripherals.
Battery Backup
Maintains operation during mains power failures.
Fault Monitoring
Monitors battery condition, charger status and output faults.
Why EN54-4 Matters
Fire alarm systems may be expected to operate even when mains power is unavailable. EN54-4 power supplies provide monitored standby power that helps maintain operation of beam detectors, aspirating smoke detection systems, AOV controls and other life safety equipment.
Typical Applications
Beam Detectors
Suitable for warehouses, atriums and large open spaces.
Aspirating Detection
Provides dependable power for ASD systems.
AOV Systems
Supports automatic opening vent controls and smoke ventilation equipment.
Sounders & VADs
Ideal for powering additional alarm notification devices.
Power Supply Selection Guide
| Output | Application | Typical Use |
|---|---|---|
| 1A - 1.5A | Smaller Systems | Beam detectors and small ASD installations |
| 2A - 3A | Medium Installations | AOV controls and multiple peripherals |
| 5A+ | Larger Installations | Sounders, VADs and complex fire systems |
Key Benefits
- EN54-4 compliant design
- Automatic battery backup operation
- Battery charging and monitoring
- Fault reporting outputs
- Deep discharge protection
- Available in multiple current ratings
- Options from Elmdene, C-TEC and Kentec
Need Help Choosing the Right EN54 PSU?
Whether you're specifying a beam detector, ASD or AOV system, the Firesense team can help you select the correct EN54-4 power supply.
Call: 01892 481100
Email: [email protected]