Description
The Belimo TFB24-SR is a direct-coupled, spring return damper actuator engineered for precise modulating control in commercial and industrial HVAC applications. Designed to mount directly to damper shafts without the need for crank arms or linkages, this actuator simplifies installation and reduces maintenance requirements.
With a robust 22 in-lb torque output and a 2–10 Vdc proportional control signal, the TFB24-SR delivers accurate, responsive damper positioning across a wide range of air handling and ventilation systems. The spring return function ensures the damper automatically returns to its fail-safe position upon loss of power, providing a critical layer of safety and system protection.
Key Features
- Spring return fail-safe operation for reliable damper positioning on power loss
- 22 in-lb (2.5 Nm) torque output for dependable damper actuation
- 2–10 Vdc modulating control signal for precise proportional positioning
- Compatible with 24 Vac and 24 Vdc power supplies for flexible installation
- Direct-coupled design — no crank arms or linkages required
- Compact, lightweight housing for easy installation in tight spaces
- Manual override function for commissioning and maintenance
Specifications
- Brand: Belimo
- Model / SKU: TFB24-SR
- Actuator Type: Spring Return, Modulating
- Torque Output: 22 in-lb
- Control Signal: 2–10 Vdc
- Power Supply: 24 Vac / 24 Vdc
- Fail-Safe Position: Spring Return
- Mounting: Direct Coupled
Applications
- Commercial air handling units (AHUs)
- VAV and constant volume HVAC systems
- Ventilation and exhaust damper control
- Building automation and energy management systems
- Outside air and mixed air damper applications
The Belimo TFB24-SR is a trusted solution for HVAC contractors and building automation professionals seeking reliable, accurate damper control with the added assurance of spring return fail-safe performance.
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