{"product_id":"magfire-24v-5a-en54-4-certified-fire-alarm-psu","title":"MAGfire 24V 5A EN54-4 Certified Fire Alarm PSU","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe MAGfire 24V 5A is a power supply unit certified to EN54-4 for use in fire detection and alarm systems. It delivers a regulated 27.6V DC output at up to 5A, providing both system power and battery charging for fire alarm control panels, detectors, sounders and auxiliary devices that require a compliant power source.\u003c\/p\u003e\n\u003cp\u003eDesigned for commercial, industrial and public building fire alarm installations, the unit mounts inside a white steel enclosure with pre-drilled cable entry points and fixing lugs for wall mounting. The PSU monitors mains supply, output load, battery condition and charger operation, with four dedicated LED indicators on the front panel showing mains status, output fault, battery fault and charger fault conditions.\u003c\/p\u003e\n\u003cp\u003eThe EN54-4 certification ensures the unit meets European fire safety standards for power supply equipment in fire detection and alarm systems, a requirement for most commercial fire alarm installations in the UK and EU. The 27.6V DC output voltage accounts for battery float charging at 24V nominal, allowing the PSU to maintain standby batteries at optimal charge while supplying the alarm system. The 5A output rating supports medium-scale fire alarm systems with multiple detector zones and notification appliances.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Net Weight (KG)\u003c\/td\u003e\n\u003ctd\u003e3.82\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Gross Weight (KG)\u003c\/td\u003e\n\u003ctd\u003e3.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Gross Weight (KG)\u003c\/td\u003e\n\u003ctd\u003e3.73\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Length (mm)\u003c\/td\u003e\n\u003ctd\u003e400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width (mm)\u003c\/td\u003e\n\u003ctd\u003e360\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Height (mm)\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch5\u003eDownloads\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/products_BPS5EN_datasheet.pdf\" target=\"_blank\"\u003eProduct Specification Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/manual_BPSxEN.pdf\" target=\"_blank\"\u003eProduct Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does EN54-4 certification mean?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEN54-4 is the European standard for power supply equipment in fire detection and alarm systems. Certification to this standard is a legal requirement for most commercial fire alarm installations in the UK and EU, ensuring the PSU meets strict reliability, performance and safety criteria for life-safety applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is the output 27.6V when fire alarm systems are rated at 24V?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 27.6V DC output voltage provides the correct float charging voltage for 24V standby batteries while simultaneously powering the fire alarm system. This voltage keeps the batteries at optimal charge without overcharging, ensuring they deliver full capacity during a mains power failure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat do the LED fault indicators show?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe unit has four LED indicators on the front panel: mains status (confirms AC supply present), output fault (detects overload or short circuit on DC output), battery fault (indicates battery disconnection or failure to charge), and charger fault (signals internal charger circuit malfunction). These allow quick diagnosis during installation, commissioning and routine maintenance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat size fire alarm system does the 5A output support?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA 5A output at 24V nominal provides 120W of total power for the fire alarm system and battery charging. This typically supports medium-scale systems with 10-20 detector zones, multiple notification appliances and auxiliary devices. Larger systems requiring higher current draw need a higher-rated PSU from the MAGfire range.\u003c\/p\u003e","brand":"ESP","offers":[{"title":"Default Title","offer_id":45294212907275,"sku":"BPS5EN","price":291.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/BPS5EN_e605d922-d0ba-4d32-817c-d4ce155e5e45.jpg?v=1714669590","url":"https:\/\/niori.co.uk\/products\/magfire-24v-5a-en54-4-certified-fire-alarm-psu","provider":"Niori","version":"1.0","type":"link"}