The BELIMO NFX24-S is designed for fail-safe, modulating control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications. A feedback signal is provided for position indication. It has a torque of 90 in-lbs and runs on 24V AC/DC power.
Symmetrical, reversible rotation design for installation flexibility
ISO 9001 manufacturing facility assures high quality
NEMA 4 Enclosure Rating for outdoor locations available on AFB, EFB and NFB models
Product Highlights
The Belimo NFX24-S damper actuator offers reliable performance with its spring return functionality, 24V operation, and on/off control, suitable for various air control applications.
Product Information
Standard Information
Brand: BELIMO
Manufacturer Part Number: NFX24-S
Technical Specifications
Actuator Type
Spring return
Angle of Rotation
95
Auxiliary Switches
2 x SPDT
Control Type
On/Off
Power Consumption (Holding)
2.5 W
Power Consumption (Running)
6 W
Protection category
IP54
Running Time (Fail-safe)
<20 s
Running Time (Motor)
75 s / 90
Torque
90 in-lb [10 Nm]
Voltage AC/DC
AC/DC 24 V
Options
None
Runtime
75 Secs
Version
Custom
Aux. Switch
1
Nema Rating
Nema 2
Spring Return
<20 Second
Communications
None
Supply Va
8.5 VA
Power Supply
24 VAC,24 VDC
Housing Material
Zinc Coated Metal and Plastic Casing
Humidity
max. 95% RH non-condensing
Manual Override
5 mm hex crank (3/16" Allen), supplied
Position Indication
visual indicator, 0 to 95 (0 is full spring return position)
Shaft Diameter
1/2 in to 1.05 in round, centers on 1/2 in and 3/4 in with insert, 1.05 in without insert
Quality Standard
ISO 9001
Power Supply Type
24V
Servicing
maintenance free
Transformer Sizing
8.5 VA (class 2 power source)
Storage Temperature Range
-40 to 176 F (-40 to 80 C)
Actuator Series
NFB(X)
Ambient Temperature Range
-22 to 122 F (-30 to 50 C)
Application Type
Air
Auxiliary Switch
2 SPDT
Agency Listings
cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02, CE acc. to 2004/108/EC and 2006/95/EC