Pros, Join Our TradeMaster Program!
  • Easy-to-adjust mechanical stop to limit damper rotation.
  • Cut labor costs with simple direct coupling. Actuator Centers on 1/2" shaft.
  • Clockwise or counterclockwise fail-safe mounting for fail-safe.
  • Compact size with the shortest shaft-center to edge distance in the industry - 0.77".
  • True mechanical spring return - the most reliable fail-safe.
  • Check damper position easily with clear position indicator.
  • Don't worry about actuator burn-out. Belimo is overload-proof throughout rotation.
  • 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 housing withstands rough handling in the mechanical room.
  • 3 ft. standard cable and conduit connector (not shown) eases installation.
For on/off, fail-safe control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer?s specifications. Control is on/off from an auxiliary contact, or a manual switch.

The TF series actuators provide true spring return operation for reliable fail-safe application and positive close off on air tight dampers. The spring return system provides consistent torque to the damper with, and without, power applied to the actuator.
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Manuals (1)
Actuator Type:

Two Position

Fail Safe Mode:

Spring Return



Power Supply:



22 lb-in

Running Time:

< 75 Seconds (motor)

< 25 Seconds @ -4°F to 122°F (spring)

< 60 Seconds @ -22°F (spring)

Power Consumption:

2W (running)

1.3W (holding)

VA Rating:


Ambient Temperature:

-22°F to +122°F

Control Input Values:


Auxiliary Switch:

No Switch

Manual Override:


Direction of Rotation:

Reversible w/ cw/ccw mounting


5-Year Limited Warranty


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