Technical data sheet
NF24A-MOD
www.belimo.com
NF24A-MOD • en-us • 2022-03-15 • Subject to change
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Mode of operation
Converter for sensors
Functional data Noise level, motor
40 dB(A)
Mechanical interface
Universal shaft clamp 10...25.4 mm
Position indication
Mechanical
Service life
Min. 60'000 fail-safe positions
Safety data Protection class IEC/EN
III, Safety Extra-Low Voltage (SELV)
Power source UL
Class 2 Supply
Degree of protection IEC/EN
IP54
Degree of protection NEMA/UL
NEMA 2
Enclosure
UL Enclosure Type 2
EMC
CE according to 2014/30/EU
Certification IEC/EN
IEC/EN 60730-1 and IEC/EN 60730-2-14
Certification UL
cULus according to UL60730-1A, UL60730-2-14
and CAN/CSA E60730-1
The UL marking on the actuator depends on
the production site, the device is UL-compliant
in any case
Mode of operation
Type 1.AA
Rated impulse voltage supply / control
0.8 kV
Pollution degree
3
Ambient temperature
-22...122°F [-30...50°C]
Storage temperature
-40...176°F [-40...80°C]
Ambient humidity
Max. 95% RH, non-condensing
Servicing
maintenance-free
Weight Weight
4.6 lb [2.1 kg]
Safety notes
This device has been designed for use in stationary heating, ventilation and air-conditioning
systems and must not be used outside the specified field of application, especially in aircraft or
in any other airborne means of transport.
Outdoor application: only possible in case that no (sea) water, snow, ice, insolation or
aggressive gases interfere directly with the actuator and that is ensured that the ambient
conditions remain at any time within the thresholds according to the data sheet.
Only authorized specialists may carry out installation. All applicable legal or institutional
installation regulations must be complied during installation.
The device may only be opened at the manufacturer's site. It does not contain any parts that
can be replaced or repaired by the user.
Cables must not be removed from the device.
To calculate the torque required, the specifications supplied by the damper manufacturers
concerning the cross-section, the design, the installation situation and the ventilation
conditions must be observed.
The device contains electrical and electronic components and must not be disposed of as
household refuse. All locally valid regulations and requirements must be observed.
Product features
The actuator is fitted with an integrated interface for BACnet MS/TP, Modbus RTU and MP-Bus.
It receives the digital positioning signal from the control system and returns the current status.
Connection option for a sensor (passive, active or with switching contact). In this way, the
analog sensor signal can be easily digitized and transferred to the bus systems : BACnet,
Modbus or MP-Bus.
