NF24-MFT US | Damper Actuator | 90 in-lb | Spg Rtn | 24V | MFT | Belimo (OBSOLETE)
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Brand: BelimoSKU: NF24-MFT US
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NF24-MFT US | Damper Actuator | 90 in-lb | Spg Rtn | 24V | MFT | Belimo (OBSOLETE)

Belimo | NF24-MFT US
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Details for NF24-MFT US


Damper Actuator | 90 in-lb | Spg Rtn | 24V | MFT


For proportional modulation of dampers and control valves in HVAC systems. The NF24-MFT US provides mechanical spring return operation for reliable fail-safe application.


Default parameters for 2 to 10 VDC applications of the NF24-MFT US actuator are assigned during manufacturing. If required, custom versions of the actuator can be ordered. The parameters noted in the Technical Data table are variable. These parameters can be changed by three means:

  • Pre-set configurations from Belimo
  • Custom configurations from Belimo
  • Configurations set by the customer using the MFT PC tool software application.


The NF24-MFT US actuator provides 95° of rotation and is provided with a graduated position indicator showing 0° to 95°. The actuator will synchronize the 0° mechanical stop or the damper or valves mechanical stop and use this point for its zero position during normal control operations.

The actuator uses a brushless DC motor which is controlled by an Application Specific Integrated Circuit (ASIC) and a microprocessor. The microprocessor provides the intelligence to the ASIC to provide a constant rotation rate and to know the actuator’s exact position. The ASIC monitors and controls the brushless DC motor’s rotation and provides a Digital Rotation Sensing (DRS) function to prevent damage to the actuator in a stall condition. The position feedback signal is generated with out the need for mechanical feedback potentiometers using DRS. The actuator may be stalled anywhere in its normal rotation without the need of mechanical end switches.

The NF24-MFT US is mounted directly to control shafts up to 1.05” diameter by means of its universal clamp and anti-rotation bracket. A crankarm and several mounting brackets are available for damper applications where the actuator cannot be direct coupled to the damper shaft. The spring return system provides minimum specified torque to the application during a power interruption. The NF24-MFT US actuator is shipped in the zero position, compression against seats or gaskets for tight shut-off is accomplished manually.


Item Number NF24-MFT US
Brand Belimo
Actuator Type Damper
Control Input Belimo MFT (Modulating)
Spring Return Spring Return
Torque 90 in-lb
Voltage 24V




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