{"product_id":"honeywell-fc-psu-unl2450u-safety-manager-power-supply-module","title":"Honeywell FC-PSU-UNl2450U Safety Manager Power Supply Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDelivering stable, high-capacity system power directly to critical safety control nodes, the \u003cstrong\u003eHoneywell FC-PSU-UNl2450U\u003c\/strong\u003e is a heavy-duty power supply unit engineered for seamless integration within the Safety Manager and Fail Safe Control (FSC) architectures. This chassis-mounted module converts incoming utility AC power into highly filtered, low-noise DC output to drive safety-critical processors, I\/O racks, and field transmitters without interruption. Built to satisfy the rigid uptime requirements of Safety Integrity Level (SIL) environments, this unit features robust internal diagnostic provisions and excellent line regulation to protect delicate downstream electronics from industrial grid fluctuations.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 20px; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Input Auto-Ranging:\u003c\/strong\u003e Supports standard nominal industrial grid inputs of 110 VAC or 240 VAC at 50\/60 Hz.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Current Capacity:\u003c\/strong\u003e Continuous 43 Amp output capability at 25 VDC designed for dense I\/O field distributions and heavy load requirements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustrial-Grade Heat Dissipation:\u003c\/strong\u003e Designed with robust heat sinks for optimal passive thermal management inside enclosed control cabinets.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFault Isolation:\u003c\/strong\u003e Engineered to prevent downstream faults from propagating back to the primary power source.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem Integration:\u003c\/strong\u003e Native mechanical and electrical design ensures slide-in alignment with standard Honeywell Safety Manager chassis rails.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 20px; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003eEmergency Shutdown (ESD) Systems\u003c\/li\u003e\n  \u003cli\u003eFire and Gas (F\u0026amp;G) Detection Systems\u003c\/li\u003e\n  \u003cli\u003eBurner Management Systems (BMS)\u003c\/li\u003e\n  \u003cli\u003eCritical Process Safety Loops in petrochemical, refining, and power generation facilities\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; width: 35%;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eHoneywell\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eModel \/ Article Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eFC-PSU-UNl2450U\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eSystem Compatibility\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eSafety Manager \/ Fail Safe Control (FSC)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eInput Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e110 \/ 240 VAC nominal\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eInput Frequency\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e50 \/ 60 Hz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eOutput Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e25 VDC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eOutput Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e43 A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eMounting Type\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eChassis Rack Mounted\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e10.0 kg (22.0 lbs)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003ePackage Dimensions (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eApprox. 420 mm x 310 mm x 220 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThis module serves as a direct drop-in replacement for earlier legacy revisions within corresponding Honeywell safety frames. When hot-swapping or running this power supply in parallel (redundant) configurations, verify that all paralleled units share identical firmware suffixes and calibration parameters to maintain proper load-sharing balance across the system backplane.\u003c\/p\u003e\n\n\u003ch3\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDue to the heavy 43 A continuous current rating of this module, thermal management is a critical factor. When mounted inside unventilated, non-air-conditioned enclosures, local hot spots may develop. Always preserve the manufacturer-specified vertical clearance gaps below and above the module rack to facilitate natural convective airflow. Avoid mixing older-generation linear supplies with this switch-mode module in the same local power segment without checking the backplane isolation configuration.\u003c\/p\u003e\n\n\u003ch3\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eEnsure all input supply connections are crimped with high-quality insulated lugs rated for high vibration environments. To minimize line drop over the high-current 25 VDC output run, use appropriately sized copper conductors calculated for the full 43 A load over the total loop distance. Always measure the output termination voltage at the farthest chassis terminal block under maximum load conditions to verify that terminal line-drop does not fall below the system tolerance threshold.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 15px; margin-bottom: 1.5rem;\"\u003e\n  \u003cp style=\"color: #9b2c2c; font-weight: bold; margin: 0 0 5px 0;\"\u003eCRITICAL WARNING\u003c\/p\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0;\"\u003eIsolate and lock out all AC incoming feeder circuits before attempting to mount, slide in, or wire the module. Internal high-energy capacitors retain hazardous voltages for up to five minutes after primary de-energization. Always use a calibrated voltage tester to verify complete energy discharge on both input and output terminals prior to handling.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 15px; margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 15px;\"\u003e\n    \u003cdiv style=\"display: flex; align-items: center; justify-content: center; background-color: #2b6cb0; color: #ffffff; min-width: 30px; height: 30px; border-radius: 50%; font-weight: bold;\"\u003e1\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eVerify that the safety system enclosure power supply rack is clear of dust, debris, or loose mounting hardware.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 15px;\"\u003e\n    \u003cdiv style=\"display: flex; align-items: center; justify-content: center; background-color: #2b6cb0; color: #ffffff; min-width: 30px; height: 30px; border-radius: 50%; font-weight: bold;\"\u003e2\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eAlign the module carefully with the heavy-duty guide rails of the Honeywell Safety Manager chassis frame.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 15px;\"\u003e\n    \u003cdiv style=\"display: flex; align-items: center; justify-content: center; background-color: #2b6cb0; color: #ffffff; min-width: 30px; height: 30px; border-radius: 50%; font-weight: bold;\"\u003e3\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eSlide the module firmly backward until the rear high-power bus connectors seat completely with the backplane connectors.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 15px;\"\u003e\n    \u003cdiv style=\"display: flex; align-items: center; justify-content: center; background-color: #2b6cb0; color: #ffffff; min-width: 30px; height: 30px; border-radius: 50%; font-weight: bold;\"\u003e4\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eSecure the front panel retaining screws to the frame and complete the input\/output field terminal connections using a calibrated torque screwdriver.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52679472251243,"sku":"FC-PSU-UNl2450U","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/fc-psu-unl2450u-c2so4ueqmge_8b711b48-bb7b-440a-aff8-a6d4b2bed7e9.jpg?v=1765958482","url":"https:\/\/www.plcprotech.com\/ru\/products\/honeywell-fc-psu-unl2450u-safety-manager-power-supply-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}