{"product_id":"k9203a-hima-process-control-subrack-circulation-fan","title":"K9203A HIMA Process Control Subrack Circulation Fan","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe HIMA K9203A operates as a heavy-duty, 1RU forced ventilation unit designed exclusively for 19-inch industrial rack systems and safety instrumented subracks. This module houses three high-velocity axial fans aligned to pull thermal loads away from densely packed safety controllers and I\/O modules. By preventing heat stratification within the control enclosure, the assembly eliminates localized overheating risks, preserves solid-state component lifespan, and maintains systemic operational integrity across oil, gas, and power generation control infrastructures.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eManufacturer: HIMA Paul Hildebrandt GmbH + Co KG\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePart Number: K9203A\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eModel Designation: Circulation Fan Assembly \/ Rack Fan\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApplication Profile: Forced thermal ventilation for standard 19-inch subracks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFan Configuration: 3 integrated high-performance axial fans\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInput Operating Voltage: 24 VDC (Accepts -15 percent to +20 percent variance)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaximum Current Draw: 750 mA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTotal Volumetric Air Flow: 300 cubic meters per hour\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRated Rotational Speed: 2800 RPM\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAcoustic Sound Pressure Level: Approximately 55 dB(A)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCalculated Fan Component Lifetime: Approximately 62,500 hours at 40 degrees Celsius\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStructural Housing Material: Heavy-duty anodized aluminum\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnclosure Form Factor: Standard 19-inch rack width, 1 RU height, 215 mm depth\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInternal Diagnostics: Continuous fan speed monitoring and supply voltage tracking\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStatus Indicators: Front-panel LED hardware indicators (Fail, 24 V)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePower Connection Interface: Multi-pin plug supporting dual redundant supplies\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePhysical Unit Dimensions: 48.3 cm x 20.3 cm x 4.5 cm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNet Hardware Weight: 1.80 KG\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTotal Shipped Package Weight: 2.00 KG\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCountry of Manufacture: Germany\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCondition Status: 100% Brand New and Original in Factory Packing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003ch3\u003eDual-Rail Power Redundancy for Continuous Cooling\u003c\/h3\u003e\n\u003cp\u003eThe K9203A connector plug routes two independent 24 VDC supply lines directly into the internal distribution circuit. If the primary power rail drops or a supply fuse blows, the secondary power input assumes the complete 750 mA current load immediately. This dual-rail setup ensures the three axial fans maintain their 2800 RPM rotational velocity without interruption, protecting vital safety processors from thermal accumulation during power subsystem faults.\u003c\/p\u003e\n\u003ch3\u003ePredictive Speed and Under-Voltage Monitoring\u003c\/h3\u003e\n\u003cp\u003eThe integrated control board continuously tracks the rotational frequency of individual fan blades and screens the incoming power lines. The diagnostic block triggers a hardware fault alert and illuminates the front panel \"Fail\" LED if a fan drops below 75 to 85 percent of its rated speed or if supply voltage sags below safe operating tolerances. This real-time reporting passes fault bits to external detectors, allowing maintenance personnel to schedule fan servicing before a total thermal failure occurs.\u003c\/p\u003e\n\u003ch3\u003eSlim 1 RU Form Factor with High-Volume Output\u003c\/h3\u003e\n\u003cp\u003eThe compact 1 RU anodized aluminum chassis slides smoothly into tight 19-inch marshaling enclosures, requiring minimal vertical real estate. Despite its thin profile, the physical geometry of the three axial fans generates an impressive air displacement of 300 cubic meters per hour. This rapid volumetric exchange pushes cool air directly into the base of the HIMA subrack, driving forced convection across hot processor fins without requiring oversized exterior AC units.\u003c\/p\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eAt what point does the internal speed monitoring trigger a failure alarm? The internal supervisory circuits continuously track the fan tachometer signals. If accumulation of dust, bearing wear, or physical obstructions drops the rotational speed of any axial fan below 75 to 85 percent of its native 2800 RPM threshold, the module instantly grounds the diagnostic loop to signal a failure to the host system.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan this fan assembly operate as a standalone cooling unit in non-HIMA racks? While the physical mounting flange conforms to the standard 19-inch (1 RU) structural layout, the pinout configuration on the power connector and the integrated monitoring channels match specific HIMA backplane architectures. Operating the unit standalone requires custom wiring harnesses to supply the 24 VDC inputs and map the external diagnostic monitoring interfaces.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat maintenance schedules do the internal bearings require to achieve the stated 62,500-hour lifetime? The axial fans utilize factory-sealed, lubrication-free industrial ball bearings designed for continuous operation. Under nominal conditions at 40 degrees Celsius, the unit runs for approximately 7 years without mechanical adjustments. Harsh environments with high ambient dust or extreme temperatures exceeding 40 degrees Celsius will accelerate bearing aging, requiring more frequent physical inspection and fan cartridge swaps.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HIMA","offers":[{"title":"Default Title","offer_id":43394496233562,"sku":"K9203A","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/219._da340c6e-0567-46b2-97bb-a574ef36b6a4.jpg?v=1779246317","url":"https:\/\/www.spareoil.com\/products\/k9203a-hima-process-control-subrack-circulation-fan","provider":"SpareOil Automation","version":"1.0","type":"link"}