{"product_id":"haydon-en54-4-boxed-psu-27-6v-2a-2-7ah-hay-psuen54-2al","title":"Haydon EN54-4 Boxed PSU 27.6V 2A, 2×7Ah HAY-PSUEN54-2AL","description":"\u003cp\u003e\u003cstrong\u003eHaydon HAY-PSUEN54-2AL — EN54-4 boxed uninterruptible power supply (24 V)\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe HAY-PSUEN54-2AL is an EN54-4 compliant, tamper‑protected boxed power supply and battery charger for fire detection and alarm systems. It provides a regulated 27.6 V DC output with integrated battery charging and automatic switchover to battery on mains failure, plus battery monitoring and protection functions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEN54-4 certified for life-safety fire alarm installations — designed for 24 V fire systems.\u003c\/li\u003e\n\u003cli\u003eRegulated 27.6 V DC nominal output, rated 2 A continuous output (model 2AL).\u003c\/li\u003e\n\u003cli\u003eIntegrated charger and battery-backup with automatic mains-to-battery switchover.\u003c\/li\u003e\n\u003cli\u003eBattery protection: deep-discharge disconnect, reverse-connection detection, short-circuit and temperature monitoring.\u003c\/li\u003e\n\u003cli\u003eOutput protection: overload\/short-circuit protection and output\/battery fusing (F2A listed).\u003c\/li\u003e\n\u003cli\u003eTamper-protected steel enclosure (large-box variant) with LED status indicators for mains, battery and fault.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eTypical applications\u003c\/strong\u003e: Primary power and standby for fire detection and alarm control panels, detectors and notification devices where EN54-4 compliance is required.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSafety \u0026amp; compliance\u003c\/strong\u003e: Fit and commission only by a qualified installer. Isolate mains and follow manufacturer wiring diagrams during installation. Confirm local approvals and markings (EN54-4 listed; check CE\/UKCA status on supplied datasheet). Batteries are hazardous goods — use recommended sealed lead‑acid batteries and follow battery handling guidance.\u003c\/p\u003e\u003cp\u003eFor full wiring diagrams, charging curves, installation instructions and detailed performance data, consult the official Haydon datasheet and product manual supplied with the unit.\u003c\/p\u003e","brand":"Haydon","offers":[{"title":"-","offer_id":56595095388533,"sku":"HAY-PSUEN54-2AL","price":180.27,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0050\/1216\/0612\/files\/ITM005947_1.png?v=1768256908","url":"https:\/\/wmestore.co.uk\/products\/haydon-en54-4-boxed-psu-27-6v-2a-2-7ah-hay-psuen54-2al","provider":"WME","version":"1.0","type":"link"}