{"product_id":"belimo-efb24-sr-s-damper-actuator-unit-trusted-supplier","title":"EFB24-SR-S | Belimo Spring Return Damper Actuator 270 In Lb 24V With Auxiliary Switches","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-start=\"122\" data-end=\"397\"\u003eThe Belimo EFB24-SR-S is a high-torque spring return damper actuator delivering 270 in-lb (30 Nm) for precise modulating airflow control in HVAC systems. It operates on AC\/DC 24 V power and features integrated auxiliary switches for position indication and control sequencing.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\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: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; 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: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003eBelimo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003eActuators \u0026amp; Dampers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003eEFB24-SR-S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003eDamper Actuators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; 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: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eNominal Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eVoltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; 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: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003ePower Consumption (Operation)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003e8 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003ePower Consumption (Rest)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003e4.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eTransformer Sizing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003e14 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eControl Signal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003e2…10 V (4…20 mA with resistor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003e100 kΩ (2…10 V), 500 Ω (4…20 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003ePosition Feedback\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003e2…10 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eTorque Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003e270 in-lb (30 Nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eAngle of Rotation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003e35…95°, adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eRunning Time (Motor)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003e95 s \/ 90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eRunning Time (Fail-Safe)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003e\u0026lt;20 s @ -20…50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eAuxiliary Switches\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003e2x SPDT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eElectrical Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003eDual 18 GA cables, 1 m, 1\/2\" NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eDegree of Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003eIP54 \/ NEMA 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eAmbient Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003e-30…50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.9117%; height: 19.5938px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.7247%; height: 19.5938px;\"\u003e11 lb (5.2 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 EFB24-SR-S\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe EFB24-SR-S is part of Belimo’s EFB series of spring return damper actuators designed for demanding HVAC airflow control applications. It incorporates electronic overload protection throughout the full rotation range and a double-insulated design to support safe and reliable operation. The actuator includes two factory-installed auxiliary switches to provide accurate position indication and support interlocking or safety-related control logic. Reversible fail-safe direction, selectable motor rotation, and adjustable mechanical end stops offer flexibility during installation and commissioning.\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: Integrated spring mechanism ensures automatic return to a predefined safety position during power loss for reliable system protection.\u003c\/li\u003e\n\u003cli\u003eHigh Torque Performance: Delivers a constant 270 in-lb (30 Nm) torque suitable for large or high-pressure air damper applications.\u003c\/li\u003e\n\u003cli\u003eModulating Control Capability: Accepts a 2…10 V control signal with optional 4…20 mA configuration for precise proportional airflow regulation.\u003c\/li\u003e\n\u003cli\u003eDual Auxiliary SPDT Switches: Includes two adjustable switches for damper position indication, sequencing, and safety interlocks.\u003c\/li\u003e\n\u003cli\u003eElectronic Overload Protection: Protects internal components throughout the full 0…95° rotation range against mechanical obstruction or overload.\u003c\/li\u003e\n\u003cli\u003eManual Override Function: Supplied hex crank allows manual damper positioning during commissioning, testing, or maintenance.\u003c\/li\u003e\n\u003cli\u003eAdjustable Mechanical End Stops: Enable precise limitation of rotation angle to match damper requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe EFB24-SR-S delivers the reliability and precision required for modulating airflow control with dependable fail-safe operation in HVAC systems.\u003c\/p\u003e","brand":"Belimo","offers":[{"title":"Default Title","offer_id":51051010785578,"sku":"EFB24-SR-S","price":1045.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/EF_web-product_retina.jpg?v=1768306666","url":"https:\/\/iqelectro.com\/products\/belimo-efb24-sr-s-damper-actuator-unit-trusted-supplier","provider":"IQElectro","version":"1.0","type":"link"}