BELIMO
Damper Control Actuator, Direct Coupled 
NMB24-SR
Features:
  • 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 (NMB24-SR)
  • 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

Fail Safe Mode:Non-Spring Return
Actuator Type:Proportional
Power Supply:
24 VAC/DC
Torque:90 lb-in
Running Time:90 Seconds
Power Consumption:
1.5W (running)
0.4W (holding)
VA Rating:5
Ambient Temperature:
-22°F to +122°F
Control Input Values:
2 to 10 VDC 4 to 20 mA
Auxiliary Switch:No Switch
Manual Override:External Push Button