BELIMO® NFB24 Spring Return Damper Actuator, 24 VAC/VDC, 20 s, 75 s Timing, Plastic/Steel, Galvanized
BELIMO® NFB24 Spring Return Damper Actuator, 24 VAC/VDC, 20 s, 75 s Timing, Plastic/Steel, Galvanized

BELIMO® NFB24 Spring Return Damper Actuator, 24 VAC/VDC, 20 s, 75 s Timing, Plastic/Steel, Galvanized

BELIMO® NFB24 Spring Return Damper Actuator, 24 VAC/VDC, 20 s, 75 s Timing, Plastic/Steel, Galvanized

Brand: BELIMO®
Part #: 40575
Customer Part #:
Configuration      :      SPDT
Control Type      :      On/Off
Dimensions      :      3.15 in H x 3.42 in D
Electrical Connection      :      18 AWG Appliance or Plenum Cable with 1/2 in Conduit Connector, 3 ft
Enclosure Type      :      IP54, NEMA 2
Finish      :      Galvanized
Frequency Rating      :      50/60 Hz
Humidity Rating      :      95 %
Input Impedance      :      100 kOhm
Material      :      Plastic/Steel
Mounting Type      :      Direct
Noise Level      :      50 dB, 62 dB
Power Consumption      :      2.5 W, 6 W
Rotation Angle      :      95 deg
Series      :      NFB
Shaft Design      :      Round
Shaft Rotation      :      CCW, CW
Shaft Size      :      0.5 to 1.05 in
Temperature Rating      :      -22 to 122 deg F
Timing Range      :      20 s, 75 s
Torque Rating      :      90 in-lb
VA Rating      :      8.5 VA
Voltage Rating      :      24 VAC/VDC

Belimo's new NFB and NFX Series sets a new standard for direct-coupled spring return actuators in the HVAC market. A compact size, low power consumption and 50% increase in minimum torque output set the new NFB and NFX apart from other market solutions. More torque combined with faster running times for both motor drive and spring return widen the application fields giving customers a cost effective solution with high-quality.

BELIMO® Spring Return Damper Actuator, Series: NFB, 24 VAC/VDC, 50/60 Hz, 8.5 VA, Electrical Connection: 18 AWG Appliance or Plenum Cable with 1/2 in Conduit Connector, 3 ft, Timing Range: 20 s, 75 s, Plastic/Steel, Galvanized, 90 in-lb Torque, Input Impedance: 100 kOhm, Noise Level: 50 dB, 62 dB, -22 to 122 deg F, IP54, NEMA 2 Enclosure, Humidity Rating: 95 %, 3.15 in H x 3.42 in D, Configuration: SPDT, Control Type: On/Off, Direct Mounting, Power Consumption: 2.5 W, 6 W, Rotation Angle: 95 deg, Round Shaft, Shaft Rotation: CCW, CW, 0.5 to 1.05 in Shaft

  • Maintenance-free servicing
  • Mechanical position indication
  • 5 mm hex crank (3/16 in Allen) manual override
  • The spring return system provides constant torque to the damper with and without, power applied to the actuator
  • The NF 24 Series provides 95 deg of rotation and is provided with a graduated position indicator showing 0 to 95 deg
  • The actuator may be stalled anywhere in its normal rotation without the need of mechanical end switches
  • Manual override is now standard on all models for faster installation and easier servicing
  • The NF 24 Series actuators provide true spring return operation for reliable failsafe application and positive close-off on airtight damper
  • Smaller housing for tight spaces and easier handling
  • Faster motor run times with MFT technology 70 s with new AF and 40 s with new NF
  • Universal power supply (for on/off models) can accept 24 to 240 VAC offering you (1) actuator for all voltage
  • The NF 24 actuator is shipped at 5 deg (5 deg from full fail safe) to provide automatic compression against damper gaskets for tight shut-off