{"product_id":"efb24-sr-n4-belimo-270-in-lb-spring-return-modulating-damper-actuator-nema-4","title":"EFB24-SR N4 | Belimo 270 In Lb Spring Return Modulating Damper Actuator NEMA 4","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"401\" data-start=\"132\"\u003eThe Belimo EFB24-SR N4 is a high-torque spring return damper actuator delivering 270 in-lb of force for precise modulating airflow control. Operating on AC\/DC 24 V with a 2…10 V control signal, it provides reliable fail-safe performance in demanding HVAC and industrial environments.\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: 450.657px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; 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: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 19.5938px;\"\u003eBelimo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 19.5938px;\"\u003eActuators \u0026amp; Dampers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 19.5938px;\"\u003eEFB24-SR N4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 19.5938px;\"\u003eDamper Actuators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eActuator Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 19.5938px;\"\u003eSpring return, modulating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eNominal Torque\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; 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: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; 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: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eNominal Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 19.5938px;\"\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eVoltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; 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: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eControl Signal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 19.5938px;\"\u003e2…10 V (4…20 mA with resistor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 39.1875px;\"\u003e\u003cstrong\u003ePower Consumption (Running)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 39.1875px;\"\u003e8 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 39.1875px;\"\u003e\u003cstrong\u003ePower Consumption (Rest)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 39.1875px;\"\u003e4.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eTransformer Sizing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 19.5938px;\"\u003e14 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eAngle of Rotation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 19.5938px;\"\u003eAdjustable 35…95°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eRunning Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 19.5938px;\"\u003e95 s \/ 90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eFail-Safe Running Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 19.5938px;\"\u003e\u0026lt;20 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eElectrical Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 19.5938px;\"\u003eTerminal blocks in NEMA 4 junction box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eDegree of Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 19.5938px;\"\u003eIP66 \/ NEMA 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eAmbient Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 19.5938px;\"\u003e-22…122°F (-30…50°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 28.5265%; height: 19.5938px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.1099%; height: 19.5938px;\"\u003e12 lb (5.3 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\"\u003eEFB24-SR N4\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe EFB24-SR N4 is part of Belimo’s heavy-duty spring return damper actuator range engineered for applications requiring high torque and enhanced environmental protection. It features a sealed enclosure rated IP66 and NEMA 4, supporting installation in wash-down areas, outdoor locations, and harsh mechanical environments. The actuator operates on AC\/DC 24 V and supports precise modulating control with 2…10 V input, along with position feedback for closed-loop control systems. Designed for maintenance-free service, it combines robust mechanical construction with electronic overload protection to ensure reliable long-term performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh Torque Spring Return Actuation: Delivers 270 in-lb (30 Nm) of torque to reliably operate large or high-resistance dampers under demanding conditions.\u003c\/li\u003e\n\u003cli\u003eFail-Safe Spring Return Function: Integrated spring mechanism automatically drives the damper to a predefined safety position during power loss.\u003c\/li\u003e\n\u003cli\u003ePrecise Modulating Control Capability: Supports 2…10 V control signals with optional 4…20 mA input for accurate and stable airflow modulation.\u003c\/li\u003e\n\u003cli\u003eRugged Environmental Protection: IP66 and NEMA 4 enclosure ratings protect internal components from dust, moisture, and wash-down exposure.\u003c\/li\u003e\n\u003cli\u003eAdjustable Mechanical Stroke: Mechanical end stops allow angle-of-rotation adjustment between 35° and 95° to match damper travel requirements.\u003c\/li\u003e\n\u003cli\u003eIntegrated Position Feedback: Provides a 2…10 V feedback signal for continuous damper position monitoring and control optimization.\u003c\/li\u003e\n\u003cli\u003eService-Friendly Design: Includes a 5 mm hex manual override and electronic overload protection for safe commissioning and dependable operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe EFB24-SR N4 delivers the reliability and precision required for high-torque, fail-safe, and modulating damper control in commercial and industrial HVAC systems.\u003c\/p\u003e","brand":"Belimo","offers":[{"title":"Default Title","offer_id":51043660398890,"sku":"EFB24-SR N4","price":1046.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/EFB24-SR-N4-product_retina_1.jpg?v=1768074172","url":"https:\/\/iqelectro.com\/products\/efb24-sr-n4-belimo-270-in-lb-spring-return-modulating-damper-actuator-nema-4","provider":"IQElectro","version":"1.0","type":"link"}