Description
The Belimo TFRX24-MFT is a versatile, multi-function spring return damper actuator engineered for demanding HVAC control applications. Designed to deliver reliable performance in building automation systems, this actuator combines flexible signal compatibility with robust spring return fail-safe operation — ensuring dampers return to a safe position in the event of a power loss.
Key Features
- Spring return fail-safe design for reliable, automatic damper positioning upon power loss
- 22 in-lb (2.5 Nm) torque output — suitable for a wide range of damper sizes
- Multi-function technology (MFT) supports multiple control signal types in a single unit
- Compatible with 4–20 mA analog control signal using 500 Ohm input impedance
- Compatible with PWM (Pulse Width Modulation) control signal using 1500 Ohm input impedance
- Supports floating point (tri-state) and On/Off control modes
- Dual voltage operation: 24 Vac or 24 Vdc power supply
- Reduces inventory requirements — one actuator covers multiple control applications
Specifications
- Brand: Belimo
- SKU / Model: TFRX24-MFT
- Actuator Type: Spring Return
- Torque: 22 in-lb
- Control Signal (4–20 mA): 500 Ohm input impedance
- Control Signal (PWM): 1500 Ohm input impedance
- Control Modes: 4–20 mA, PWM, Floating Point, On/Off
- Supply Voltage: 24 Vac / 24 Vdc
Applications
- Commercial and industrial HVAC damper control
- Building automation and energy management systems
- Air handling units (AHUs), VAV systems, and ventilation dampers
- Retrofit and new-construction projects requiring multi-signal flexibility
The TFRX24-MFT’s Multi-Function Technology (MFT) platform is a hallmark of Belimo’s engineering excellence, allowing installers and controls technicians to configure the actuator on-site for the specific signal type required — eliminating the need to stock multiple SKUs. Whether your BAS communicates via 4–20 mA, PWM, floating point, or simple On/Off commands, this single actuator handles them all with ease.
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