Spring Return Fail-Safe, Proportional Damper Actuator, MFT - 24 VAC/DC Zoom

Spring Return Fail-Safe, Proportional Damper Actuator, MFT - 24 VAC/DC


Brand: Belimo

AF24-MFT-S has been discontinued.
Direct Replacement:
Brand: Belimo



Power Supply: 24 VAC/DC
Fail Safe Mode: Spring Return
Actuator Type: Proportional
Torque: 133 lb-in
Running Time: 150 Seconds (motor)*
<20 Seconds (spring)
Features: Multi-Function Technology
VA Rating: 10 VA
Ambient Temperature: -22°F to +122°F
Control Input Values: 2 to 10 VDC
4 to 20 mA (default)
Auxiliary Switch: 2 SPDT
Manual Override: Yes
Direction of Rotation: Reversible w/ cw/ccw mounting (spring)
Reversible w/ cw/ccw mounting
Warranty: 5-Year Limited Warranty

Description for Belimo AF24-MFT-S


  • Cut labor costs with simple direct coupling
  • True mechanical spring return - the most reliable fail-safe
  • Reverse mount for clockwise or counterclockwise fail-safe
  • Check damper position easily with clear position indicator
  • Overload-proof throughout rotation
  • Temporary restrictions in damper movement will not change actuator operation. Actuator returns to normal operation when restriction is removed (modulating actuators)
  • Easy mechanical stop to adjust angle of rotation (add ZDB-AF2 US US accessory)
  • By eliminating internal condensation Golden Point breather membrane optimizes performance in harsh airstream environments
  • Built-in auxiliary switch is easy to use, offers feedback or signal for additional device (-S models)
  • Manual override crank speeds installation
  • Need to change control direction? Do it easily with a simple switch (modulating actuators)
  • Microprocessor-controlled brushless DC motor increases actuator life span and reliability, provides constant running time (modulating actuators)
  • Rugged metal housing withstands rough handling in the mechanical room
  • 3 ft. appliance cable and conduit connector eases installation
  • Double insulated - no need for separate safety ground. A Belimo exclusive (-S,120V, 230V models)
  • Automatically compensates for damper seal wear, ensuring tight close-off
The AF24-MFT-S is used for proportional modulation of dampers and control valves in HVAC systems. It provides mechanical spring return operation for reliable fail-safe application.

*Note: Running time (motor) & Direction of Rotation varies when configured w/ MFT options

Spring Return Fail-Safe, Proportional Damper Actuator, MFT - 24 VAC/DC

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