{"product_id":"bf24-tn-belimo-fire-damper-actuator-spring-return-24v-with-auxiliary-switches","title":"BF24-TN | Belimo Fire Damper Actuator Spring Return 24V With Auxiliary Switches","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"397\" data-start=\"122\"\u003eThe Belimo BF24-TN is a spring-return fire damper actuator designed for reliable fail-safe operation on life-safety HVAC systems. The BF24-TN provides controlled motor positioning and rapid spring-driven closure to ensure secure damper positioning during power loss or emergency conditions.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 100%; height: 470.251px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003eBelimo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003eHVAC Actuators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003eBF24-TN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003eFire Damper Actuators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003eAC\/DC 24 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eNominal Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eVoltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003eAC 19.2…28.8 V \/ DC 21.6…28.8 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 39.1875px;\"\u003e\u003cstrong\u003ePower Consumption (Operation)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 39.1875px;\"\u003e7 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 39.1875px;\"\u003e\u003cstrong\u003ePower Consumption (Rest)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 39.1875px;\"\u003e2 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 39.1875px;\"\u003e\u003cstrong\u003ePower Consumption (Wire Sizing)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 39.1875px;\"\u003e10 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eInrush Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003e8.3 A @ 5 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eMotor Torque\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003e18 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eFail-Safe Torque\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003e12 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eAngle of Rotation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003eMax. 95°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eRunning Time (Motor)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003e\u0026lt;120 s \/ 90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eRunning Time (Fail-Safe)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003e16 s @ 20°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eAuxiliary Switches\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003e2x SPDT, 5° \/ 80°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eProtection \/ Cabling\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003eHalogen-free cables\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eService Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003eMin. 60,000 safety positions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.554%; height: 19.5938px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.0824%; height: 19.5938px;\"\u003e2.7 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003ch4\u003eInformation About\u003cspan data-sheets-root=\"1\"\u003e BF24-TN\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe BF24-TN is a fire damper actuator from Belimo engineered specifically for safety-related air control applications where dependable fail-safe performance is required. It features a robust electromechanical design with integrated spring return, supporting precise damper actuation under normal operation and automatic positioning during power interruption. The BF24-TN supports AC\/DC 24 V control and includes dual auxiliary switches for position feedback and system interlocking. Its compact form factor, halogen-free cabling, and selectable mounting direction allow integration into a wide range of fire and smoke damper assemblies in commercial and industrial HVAC installations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpring-Return Fail-Safe Operation: Provides automatic damper movement to the safety position during power loss using a high-reliability spring mechanism.\u003c\/li\u003e\n\u003cli\u003eAC\/DC 24 V Control Power: Supports standard low-voltage HVAC control systems with stable operation across a wide voltage tolerance range.\u003c\/li\u003e\n\u003cli\u003eHigh Torque Output: Delivers 18 Nm motor torque and 12 Nm fail-safe torque to ensure dependable damper positioning under load.\u003c\/li\u003e\n\u003cli\u003eDual Auxiliary Switches: Equipped with 2x SPDT switches for precise position indication and integration with monitoring or control systems.\u003c\/li\u003e\n\u003cli\u003eManual Override Capability: Includes a manual override with position stop to allow commissioning, testing, or maintenance without power.\u003c\/li\u003e\n\u003cli\u003eQuiet and Efficient Operation: Maintains low sound power levels during both motor-driven and fail-safe operation.\u003c\/li\u003e\n\u003cli\u003eLong Service Life: Designed for a minimum of 60,000 safety cycles to support long-term operation in critical environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe BF24-TN delivers the reliability and precision required for fire and smoke damper actuation in safety-critical HVAC systems.\u003c\/p\u003e","brand":"Belimo","offers":[{"title":"Default Title","offer_id":51047786053930,"sku":"BF24-TN","price":619.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/BelimoBFMarineFireandSmokeActuators-18-BF24-TN__75433.1703128518.png?v=1768209318","url":"https:\/\/iqelectro.com\/products\/bf24-tn-belimo-fire-damper-actuator-spring-return-24v-with-auxiliary-switches","provider":"IQElectro","version":"1.0","type":"link"}