www.belimo.com T2-NF24A • en • v1.1 • 06.2011 • Subject to changes 1 / 3
Technical data sheet NF24A
Technical data
Electrical data
Nominal voltage AC 24 V, 50/60 Hz / DC 24 V
Nominal voltage range AC 19.2 ... 28.8 V / DC 21.6 ... 28.8 V
Power consumption In operation
At rest
For wire sizing
6 W @ nominal torque
2.5 W
8.5 VA
Connection Cable 1 m, 2 x 0.75 mm
2
Functional data
Torque Motor
Spring return
Min. 10 Nm @ nominal voltage
Min. 10 Nm
Direction of rotation Can be selected by mounting L / R
Manual override With hand crank and interlocking switch
Angle of rotation Max. 95° , can be limited with adjustable
mechanical end stop
Running time Motor
Spring return
≤75 s (0 ... 10 Nm)
≤20 s @ –20 ... 50°C / max. 60 s @ –30°C
Sound power level Motor
Spring return
≤45 dB (A)
≤62 dB (A)
Service life Min. 60,000 emergency positions
Position indication Mechanical
Safety
Protection class III Extra low voltage
UL Class 2 Supply
Degree of protection IP54
NEMA2, UL Enclosure Type 2
EMC CE according to 2004/108/EC
Certication Certied to IEC/EN 60730-1 and IEC/EN 60730-2-14
cULus according to UL 60730-1A and UL 60730-2-14
and CAN/CSA E60730-1:02
Mode of operation Type 1.AA
Rated impulse voltage 0.8 kV
Control pollution degree 3
Ambient temperature –30 ... +50°C
Non-operating temperature –40 ... +80°C
Ambient humidity 95% r.h., non-condensating
Maintenance Maintenance-free
Dimensions / Weight
Dimensions See «Dimensions» on page 3
Weight Approx. 1.8 kg
Spring return actuator with emergency
function for adjusting air dampers in
ventilation and air conditioning systems
in buildings
• For air dampers up to approx. 2 m
2
• Torque 10 Nm
• Nominal voltage AC/DC 24 V
• Control: Open-close
To Next Page
Need help?
General
