Description
The Belimo TFB24-3-S is a heavy-duty spring return damper actuator engineered for precise, reliable control in commercial and industrial HVAC applications. Featuring a floating point control signal and a built-in auxiliary switch, this actuator delivers consistent damper positioning with fail-safe spring return operation — ensuring your system defaults to a safe position in the event of a power loss.
Key Features
- Spring return fail-safe operation for automatic damper positioning on power loss
- 22 in-lb (2.5 Nm) torque output — suitable for a wide range of damper sizes
- Floating point (3-point) control signal for flexible integration with building automation systems
- Compatible with 24Vac and 24Vdc power supplies for versatile installation
- Integrated auxiliary switch for end-position feedback or interlocking with other system components
- Compact, rugged housing designed for long-term performance in demanding environments
- Tool-free manual override for easy commissioning and servicing
- Direct-coupled design — no crank arm or linkage required
Specifications
- Brand: Belimo
- Model / SKU: TFB24-3-S
- Torque: 22 in-lb
- Control Type: Floating (3-point)
- Power Supply: 24Vac / 24Vdc
- Actuator Type: Spring Return
- Auxiliary Switch: Included
Applications
- VAV and constant volume air handling units
- Outdoor air, exhaust, and mixing dampers
- Building automation and energy management systems
- Commercial HVAC zoning and ventilation control
Belimo is a globally recognized leader in actuator and valve technology, trusted by HVAC professionals for quality, precision, and ease of installation. The TFB24-3-S is an ideal choice when dependable fail-safe damper control and position feedback are required.
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