NFA-S2 - Belimo Spring-return Damper Actuator 10 Nm, < 75 s, 95°

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The Belimo NFA-S2 is a type of Actuator used in HVAC and ventilation systems.

The force applied by the Torque of the NFA-S2 is 10 Nm.

The power supply requested for this Rotary Actuator is AC 24...240 V /DC 24...125 V.

If you have questions concerning size or installation, refer to the Belimo custom datasheet above or email iacs for individualised support.

NFA-S2 - Spring-return actuator 10 Nm, < 75 s, 95°

•   AC 24...240 V / DC 24...125 V, Open/Close, 2 x SPDT
•   IP 54, Manual override with integrated position stop
•   Running time spring < 20 s
•   Control Open/Close with single-wire contact
•   Connection PVC cable 1m
•   Auxiliary switch 2 integral
•   Rating 1 mA...3(0.5)A, AC 250 V
•   Spindle driver universal spindle clamp 
•   Direction of rotation reversible (right/left)
•   Angle of rotation limit. mech. adjustable


 

Features
 

• Mode of operation The actuator is equipped with a universal power module and can process supply voltages from AC 24 ... 240 V plus DC 24 ... 125 V.The actuator moves the damper to the operating position at the same time as tensioning the return spring. The damper is turned back to the emergency position by spring force if the supply voltage is interrupted.


• Simple direct mounting Simple direct mounting on the damper spindle with a universal spindle clamp, supplied with an anti-rotation strap to prevent the actuator from rotating.


• Manual override Manual operation of the damper with the hand crank, locking in any position with the interlocking switch. Unlocking is manual or automatic by applying the operating voltage.The housing cover must be removed to set the manual override.


• Adjustable angle of rotation Adjustable angle of rotation with mechanical end stop. 


• High operational reliability The actuator is overload-proof, requires no limit switches and automatically stops when the end stop is reached.


• Flexible signalization The actuator has one auxiliary switch with a fixed setting and one adjustable auxiliary switch. They permit a 10% or 10 ... 90% angle of rotation to be signalled. 

•     Electrical data Nominal voltage AC 24 ... 240 V, 50/60 Hz / DC 24 ... 125 V
•     Nominal voltage range AC 19,2 ... 264 V / DC 21,6 ... 137,5 V
•     Power consumption In operation 6 W @ nominal torque At rest 2.5 W For wire sizing 9.5 VA
•     Auxiliary switch2 x SPDT, 1 mA ... 3 (0.5) A, AC 250 V(1 x fix 10% / 1 x adjustable 10 ... 90%)
•     ConnectionMotorAuxiliary  1 m, 2 x 0.75 mm2 switchCable  Cable 1 m, 6 x 0.75 mm2  
•     Functional data Torque Motor Min. 10 Nm @ nominal voltage Spring return 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 ≤75 s (0 ... 10 Nm) Spring return ≤20 s @ –20 ... 50°C / max. 60 s @ –30°C
•     Sound power level Motor ≤45 dB (A) Spring return ≤62 dB (A
•     Service life Min. 60,000 emergency positions
•     Position indication Mechanical
•     Safety Protection class II Extra low voltage / UL Class 2 Supply 
•     Degree of protection IP54 NEMA2, UL Enclosure Type 2
•     EMC CE according to 2004/108/EC Low-voltage directive CE according to 2006/95/EC
•     Certification Certified to IEC/EN 60730-1 and IEC/EN 60730-2-14 cULus according to UL 60730-1A and UL 60730-2-14and CAN/CSA E60730-1:02
•     Mode of operation Type 1.AA.B
•     Rated impulse voltage Actuator 4 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. 2.2 kg