The Belimo TFB24-MFT Damper Actuator,22 in-lb,Spring Return,24V,MFT
The Belimo TFB24-MFT Damper Actuator is a compact, spring-return damper actuator designed for precise airflow control in commercial HVAC systems. Featuring Belimo’s Multi-Function Technology (MFT), this actuator offers flexible control signals and reliable fail-safe operation, making it a top choice for engineers, contractors, and building automation professionals.
Apex Controls supplies genuine Belimo actuators with fast U.S. shipping for critical HVAC applications.
Overview
The TFB24-MFT is engineered for small damper applications requiring 22 in-lb (2.5 Nm) torque and dependable spring-return functionality. It operates on 24V AC/DC power and supports modulating control (2–10V), allowing precise positioning within building automation systems.
Designed for direct-coupled mounting, this actuator simplifies installation while delivering consistent, maintenance-free performance.
Key Features
- 22 in-lb (2.5 Nm) torque for small dampers
- Spring return (fail-safe) for reliable positioning on power loss
- 24V AC/DC power supply
- MFT (Multi-Function Technology) for flexible control
- Supports 2–10V modulating control signals
- Direct-coupled design for easy installation
- Compact footprint for tight spaces
- Long service life with maintenance-free operation
Belimo’s MFT platform allows the actuator to be configured for multiple signal types and operating modes, reducing SKU complexity and simplifying field replacements.
Applications
The Belimo TFB24-MFT is commonly used in:
- VAV boxes
- Air handling units (AHUs)
- Rooftop units (RTUs)
- Zone control dampers
- Commercial HVAC retrofits and new construction
Its fail-safe spring return ensures dampers move to a safe position during power loss—critical for ventilation and safety compliance.
Technical Specifications
| Specification | Details |
|---|---|
| Torque | 22 in-lb (2.5 Nm) |
| Voltage | 24V AC/DC |
| Control Type | Modulating (2–10V) |
| Fail-Safe | Yes (spring return) |
| Rotation | 95° |
| Running Time | ~75 seconds |
| Fail-Safe Time | <25 seconds |
| Mounting | Direct coupled |
| Protection | NEMA 2 |




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