The HAY-PSUEN54-1A is a precision-engineered power solution built to meet the uncompromising demands of the fire security industry. Certified to EN54-4:1997 +A1:2002 +A2:2006, this unit is a mandatory requirement for certified fire detection installations. It provides a highly stable 27.6V DC output, optimized for charging 24V battery strings while simultaneously powering system loads. The compact enclosure, measuring 275mm x 330mm x 80mm, is designed to maximize space efficiency while providing ample room for the internal PCB and the required standby VRLA batteries.This power supply features a sophisticated diagnostic and monitoring suite essential for life-safety applications. It continuously checks for battery presence, high internal resistance, and charging circuit integrity, providing immediate feedback via onboard LED indicators and dual fault relays. These relays (Mains Fail and Battery/General Fault) allow for seamless integration with a main Fire Alarm Control Panel (FACP) to signal any loss of system integrity. To ensure maximum battery longevity, the unit utilizes temperature-compensated charging and deep discharge protection, preventing permanent damage to the batteries during prolonged outages. Housed in a durable, powder-coated steel box with convenient cable knockouts, the HAY-PSUEN54-1A is the definitive choice for installers requiring a compact, fully compliant, and robust 24V power hub.
Haydon
