{"product_id":"51303940-251-dual-fan-alarm-assembly-honeywell","title":"51303940-251 Dual Fan Alarm Assembly | Honeywell","description":"\u003cp\u003eThe \u003cstrong\u003e51303940-251\u003c\/strong\u003e Dual Fan Alarm Assembly is a cabinet cooling and monitoring unit manufactured by Honeywell for TDC and Experion system enclosures. It provides active fan-health surveillance and alarm signaling to maintain thermal reliability within industrial control cabinets, serving as a direct replacement for original UCN cabinet fan assemblies.\u003c\/p\u003e\n\u003ch3\u003eMonitoring and Alarm Operation\u003c\/h3\u003e\n\u003cp\u003eThe assembly features integrated dual-fan monitoring that indicates normal operation via a status LED. Under normal operating conditions, the internal alarm contacts remain closed. When a fan failure is detected, the unit switches to provide a normally-open alarm output at the terminal block.\u003c\/p\u003e\n\u003ch3\u003eSystem Compatibility and Integration\u003c\/h3\u003e\n\u003cp\u003eDesigned for seamless integration into existing control infrastructure, the monitoring circuit is compatible with standard 24 VDC Digital Input FTAs for remote fan-health monitoring. The unit is available in a CE-compliant 230 V version, and Honeywell recommends installing new replacement fans during maintenance to ensure remaining lifetime reliability.\u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e51303940-251\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eDual Fan Alarm Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Rating\u003c\/td\u003e\n\u003ctd\u003eCE-compliant 230 V version available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNormal Operation Contacts\u003c\/td\u003e\n\u003ctd\u003eClosed contacts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm Output\u003c\/td\u003e\n\u003ctd\u003eNormally-open contacts at terminal block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Monitoring\u003c\/td\u003e\n\u003ctd\u003eCompatible with 24 VDC Digital Input FTA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eReplacement for original UCN cabinet fan assemblies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003eFrequently Asked Questions\u003c\/p\u003e\n\u003cp\u003eQ: What is the primary function of the 51303940-251 assembly?\u003c\/p\u003e\n\u003cp\u003eA: It provides cabinet cooling support along with integrated fan-health monitoring and alarm signaling for Honeywell TDC and Experion system enclosures.\u003c\/p\u003e\n\u003cp\u003eQ: How does the unit signal a fan failure to the control system?\u003c\/p\u003e\n\u003cp\u003eA: It features a normally-open alarm output at the terminal block and includes a status LED to indicate normal operation of both fans.\u003c\/p\u003e\n\u003cp\u003eQ: What digital input hardware is compatible with this alarm assembly?\u003c\/p\u003e\n\u003cp\u003eA: It is compatible with 24 VDC Digital Input FTAs for remote monitoring of fan health.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":68153736429864,"sku":"51303940-251","price":315.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/6266\/2184\/files\/MC-FAN51151303940-250_e3f1b03e-47e5-486a-a431-dea19b9fd38f.png?v=1794377124","url":"https:\/\/www.powerdcs.com\/es\/products\/51303940-251-dual-fan-alarm-assembly-honeywell","provider":"Power DCS Parts Limited","version":"1.0","type":"link"}