AMX120-3 | Damper Actuator | 180 in-lb | Non-Spg Rtn | 100 to 240V | On/Off/Floating Point | Belimo
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Brand: BelimoSKU: AMX120-3

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AMX120-3 | Damper Actuator | 180 in-lb | Non-Spg Rtn | 100 to 240V | On/Off/Floating Point | Belimo

Configurable Damper Actuator, 180 in-lb [20 Nm], Non fail-safe, AC 100...240 V, On/Off, Floating point

Belimo | AMX120-3
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Belimo AMX120-3 Documents


Details for AMX120-3

Damper Actuator | 180 in-lb | Non-Spg Rtn | 100 to 240V | On/Off/Floating Point


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 mounted directly to a damper shaft up to 1.05” in diameter by means of its universal clamp, self-centered default. A crank arm and several mounting brackets are available for applications where the actuator cannot be direct coupled to the damper shaft.


The actuator is not provided with and does not require any limit switches, but is electronically protected against overload. The anti-rotation strap supplied with the actuator will prevent lateral movement. The AMX series provides 95° of rotation and a visual indicator indicates position of the actuator. When reaching the damper or actuator end position, the actuator automatically stops. The gears can be manually disengaged with a button on the actuator cover. The AMX120-3 actuators use a sensorless brushless DC motor, which is controlled by an Application Specific Integrated Circuit (ASIC). The ASIC monitors and controls the actuator’s rotation and provides a digital rotation sensing (DRS) function to prevent damage to the actuator in a stall condition. Power consumption is reduced in holding mode. Add-on auxiliary switches or feedback potentiometers are easily fastened directly onto the actuator body for signaling and switching functions.


Actuator Type
Non fail-safe
Angle of Rotation
Control Type
Degree of Protection
Electrical Connection
Power Consumption (Holding)
0.6 W
Power Consumption (Running)
3 W
Protection category
Running Time (Motor)
90 s / 90B0
Running Time range (Motor)
90 or 150 s
180 in-lb [20 Nm]
Voltage AC/DC
AC 100...240 V


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