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  • Brushless DC Motor for Added Accuracy and Controllability
  • Cut Labor Costs with Simple Direct Coupling
  • Self-Centers on 1/2",3/4", and 1.05" Jackshafts with Standard Clamp
  • Check Damper Position with Clear Position Indicator
  • Don't Worry about Actuator Burn-Out; Belimo is Overload Proof throughout Rotation
  • Enjoy Added Flexibility with Easy Mechanical Stops to Adjust Angle of Rotation
  • Need to Change Control Direction? Do it easily with a Simple Switch
  • Easily Accessible Manual Override Button helps you Pre-Tension Damper Blades
  • Fully Adjustable Built-In Auxiliary Switch (AMB24-3-S)
  • Auxiliary Switch and Feedback Potentiometer Add-Ons Mount Directly on Clamp, Includes Conduit Connector
  • Standard 3ft Plenum Rated Cable and Conduit Connector Provided on Basic Models
  • Added Flexibility to Select Clamp, Electrical Connection, and Running Time to fit your Specific Application with Belimo's New Flexible Line of Actuators

The AMB24-3-S is used for on/off and floating point control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer's specifications.

The actuator is provided with 1 built-in auxiliary switch. This SPDT switch is provided for safety interfacing or signaling, for example, for fan startup. The switching function is adjustable 0 to 95°. The auxiliary switch is double insulated so an electrical ground connection is not necessary.
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Fail Safe Mode:

Non-Spring Return

Actuator Type:

Two Position


Power Supply:



180 lb-in

Running Time:

95 Seconds

Power Consumption:

2.5W (running)

0.5W (holding)

VA Rating:


Ambient Temperature:

-22°F to +122°F

Control Input Values:

On/Off Floating Point

Auxiliary Switch:


Manual Override:

External Push Button


5 Year


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