NF24A-S2 - Belimo Spring-return Damper Actuator 10 Nm

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The Belimo NF24A-S2 is a type of Actuator used in HVAC and ventilation systems.

The force applied by the Torque of the NF24A-S2 is 10 Nm.

The power supply requested for this Rotary Actuator is 24Vac/Vdc.

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

The Belimo NF24A-S2 is a Spring-return actuator with a  Torque 10 Nm.

•   AC / DC 24 V, Open/Close, 2 x SPDT
•   IP 54, Manual override with integrated position stop
•   Running time spring < 20 s
•   Control single-wire
•   Connection PVC cable 1m
•   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 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.

• 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 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 6 W @ nominal torque At rest 2.5 W For wire sizing 8.5 VA
•     Auxiliary switch 2 x SPDT, 1 mA ... 3 (0.5) A, AC 250 V (1 x fix 10% / 1 x adjustable 10 ... 90%)
•     Connection Motor 1 m, 2 x 0.75 mm2 Auxiliary switch 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 III Extra low voltage / UL Class 2 Supply 
•     Degree of protection IP54NEMA2, UL Enclosure Type 2
•     EMC CE according to 2004/108/EC Low-voltage directive CE according to 2006/95/EC
•     Certification cULus according to UL 60730-1A and UL 60730-2-14and CAN/CSA E60730-1:02Certified to IEC/EN 60730-1 and IEC/EN 60730-2-14
•     Mode of operation Type 1.AA.B
•     Rated impulse voltage Actuator 0.8 kV Auxiliary switch Auxiliary switch
•     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. 2.0 kg