Description
The Belimo NF24A-S2 Rotary Actuator is a reliable and efficient solution for adjusting dampers in technical building installations, specifically designed for applications such as heating, ventilation, and air-conditioning systems. This actuator is equipped with robust features that ensure high performance and longevity, making it an ideal choice for various commercial and industrial settings.
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The Belimo NF24A-S2 is engineered to handle air damper sizes up to approximately 2 m², offering precise control and adjustment. It operates with a nominal torque of 10 Nm and is suitable for both AC and DC voltage inputs, providing flexibility and compatibility with different electrical systems.
Electrical Data
- Nominal Voltage: AC/DC 24 V
- Nominal Voltage Frequency: 50/60 Hz
- Nominal Voltage Range: AC 19.2...28.8 V / DC 21.6...28.8 V
- Power Consumption in Operation: 6 W
- Power Consumption in Rest Position: 2.5 W
- Power Consumption for Wire Sizing: 8.5 VA
- Connection Supply / Control: Cable 1 m, 2x 0.75 mm²
- Parallel Operation: Yes (Note the performance data)
Functional Data
- Torque Motor: 10 Nm
- Torque Fail-Safe: 10 Nm
- Direction of Motion Motor: Selectable by mounting L/R
- Direction of Motion Fail-Safe: Selectable by mounting L/R
- Manual Override: Hand crank and locking switch
- Angle of Rotation: Max. 95° (Adjustable starting at 33% in 2.5% steps with mechanical end stop)
- Running Time Motor: 75 s / 90°
- Running Time Fail-Safe: <20 s @ -20...50°C / <60 s @ -30°C
- Sound Power Level, Motor: 45 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
- Protection Class Auxiliary Switch IEC/EN: II, reinforced insulation
- 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
- Low Voltage Directive: CE according to 2014/35/EU
- Certification IEC/EN: IEC/EN 60730-1 and IEC/EN 60730-2-14
Additional Certifications and Standards
- UL Approval: cULus according to UL60730-1A, UL60730-2-14 and CAN/CSA E60730-1
- Hygiene Test: According to VDI 6022 Part 1 / SWKI VA 104-01, cleanable and disinfectable, low emission
- Type of Action: Type 1.AA.B
- Rated Impulse Voltage Supply / Control: 0.8 kV
- Rated Impulse Voltage Auxiliary Switch: 2.5 kV
- Pollution Degree: 3
- Ambient Humidity Max.: 95% RH, non-condensing
- Ambient Temperature: -30...50°C [-22...122°F]
- Storage Temperature: -40...80°C [-40...176°F]
- Servicing: Maintenance-free
- Weight: 2.1 kg
Operating Mode: Moves the damper to the operating position while tensioning the return spring; returns to fail-safe position by spring force upon voltage interruption.
Simple Direct Mounting: Universal shaft clamp for easy installation.
Manual Override: Hand crank allows manual actuation and locking.
Adjustable Angle of Rotation: Mechanical end stops for custom settings.
High Functional Reliability: Overload protection and automatic stop at end stop.
Flexible Signalling: One fixed and one adjustable auxiliary switch for various angle of rotation signalling.
Electrical Accessories:
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Auxiliary Switch 2x SPDT S2A-F
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Feedback Potentiometer 1 kΩ P1000A-F
Mechanical Accessories:
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Shaft Extension 240 mm AV8-25
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End Stop Indicator IND-AFB
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Shaft Clamp K7-2
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Ball Joint KH8/KH10 KG10A
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Damper Crank Arm KH8
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Actuator Arm KH-AFB
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Form Fit Inserts ZF10-NSA-F, ZF12-NSA-F, ZF15-NSA-F, ZF16-NSA-F
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Mounting Kit ZG-AFB
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Baseplate Extension Z-SF
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Anti-Rotation Mechanism Z-ARS230L
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Hand Crank ZKN2-B
For more information and to explore our range of Belimo products, visit https://ecospares.co.uk/collections/belimo. If you need any assistance, please contact us.
