{"product_id":"belimo-tfrb24-sr-spring-return-actuator-reliable-delivery","title":"TFRB24-SR | Belimo Spring Return Valve Actuator Modulating 24 V AC DC","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-start=\"106\" data-end=\"392\"\u003eThe Belimo TFRB24-SR is a spring return valve actuator designed for modulating control in HVAC and building automation systems. It operates on AC\/DC 24 V and supports proportional control signals for precise and reliable damper or valve positioning.\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: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; 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: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003eBelimo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003eHVAC Control Components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003eTFRB24-SR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003eValve Actuators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eActuator Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003eSpring Return, Modulating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; 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: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eVoltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; 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: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003ePower Consumption (Operation)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003e2.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003ePower Consumption (Rest)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003e1 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eTransformer Sizing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003e4 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eControl Signal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003e2–10 V (4–20 mA with external resistor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; 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: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003ePosition Feedback\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003e2–10 V, max. 0.5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eAngle of Rotation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003eMax. 95°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eRunning Time (Motor)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003e95 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eRunning Time (Fail-Safe)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003e\u0026lt;25 s @ 20°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eDegree of Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003eIP42 \/ NEMA 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eAmbient Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; 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: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003e−40…80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.0412%; height: 19.5938px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5952%; height: 19.5938px;\"\u003e0.69 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\"\u003eTFRB24-SR\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe TFRB24-SR is a Belimo spring return actuator engineered for applications requiring controlled modulation combined with a defined fail-safe position. It supports proportional voltage control and optional current input, allowing flexible integration into modern HVAC control architectures. The actuator incorporates an internal spring mechanism that drives the device to a safe position upon power loss, enhancing system safety and reliability. Its compact housing, selectable direction of rotation, and factory-installed cable simplify installation and commissioning in control panels and mechanical systems.\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: Automatically drives the actuator to a predefined safety position during power loss to protect equipment and system operation.\u003c\/li\u003e\n\u003cli\u003eProportional modulating control: Supports 2–10 V control signals, with optional 4–20 mA input capability for flexible control integration.\u003c\/li\u003e\n\u003cli\u003eSelectable rotation direction: Motor direction can be configured via switch, while fail-safe direction is adjustable through mounting orientation.\u003c\/li\u003e\n\u003cli\u003eIntegrated position feedback: Provides a 2–10 V feedback signal for real-time position monitoring and closed-loop control.\u003c\/li\u003e\n\u003cli\u003eQuiet motor performance: Low operating noise supports installation in occupied or noise-sensitive environments.\u003c\/li\u003e\n\u003cli\u003eElectronic overload protection: Protects the actuator throughout the full rotation range to enhance durability and service life.\u003c\/li\u003e\n\u003cli\u003eMaintenance-free design: Engineered for long-term operation without periodic servicing requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe TFRB24-SR delivers the reliability and precision required for safe, accurate modulating control of valves and dampers in HVAC and building automation systems.\u003c\/p\u003e","brand":"Belimo","offers":[{"title":"Default Title","offer_id":51031942332714,"sku":"TFRB24-SR","price":317.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/s-l1600_159fb05d-7a66-4498-8bd5-dbd7d11d4bc5.webp?v=1767818496","url":"https:\/\/iqelectro.com\/products\/belimo-tfrb24-sr-spring-return-actuator-reliable-delivery","provider":"IQElectro","version":"1.0","type":"link"}