Description
Introducing the Belimo NFA-S2 Rotary Actuator, designed for fail-safe adjustment of dampers in technical building installations. Ideal for air damper sizes up to approximately 2 m², this actuator ensures reliable performance with a robust torque motor of 10 Nm. Whether for industrial applications or engineering projects, the NFA-S2 combines efficiency and durability, making it a top choice for tradesmen and engineering companies.
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Electrical Data:
- Nominal Voltage: AC 24...240 V / DC 24...125 V
- Nominal Voltage Frequency: 50/60 Hz
- Nominal Voltage Range: AC 19.2...264 V / DC 21.6...137.5 V
- Power Consumption in Operation: 6 W
- Power Consumption in Rest Position: 2.5 W
- Power Consumption for Wire Sizing: 9.5 VA
- Auxiliary Switch: 2x SPDT, 1x 10% / 1x 11...100%
- Switching Capacity Auxiliary Switch: 1 mA...3 A (0.5 A inductive), DC 5 V...AC 250 V
- Connection Supply / Control: Cable 1 m, 2x 0.75 mm²
- Connection Auxiliary Switch: Cable 1 m, 6x 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: By means of hand crank and locking switch
- Angle of Rotation: Max. 95°
- Angle of Rotation Note: 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: II, reinforced insulation
- Protection Class UL: II, reinforced insulation
- 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 Safety Data:
- 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: 4 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: 2.2 kg
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 ø20 mm for damper shaft ø8...22.7 mm AV8-25
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End stop indicator IND-AFB
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Shaft clamp reversible, for central mounting, for damper shafts ø12.7 / 19.0 / 25.4 mm K7-2
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Ball joint suitable for damper crank arm KH8 / KH10 KG10A
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Ball joint suitable for damper crank arm KH8 KG8
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Damper crank arm Slot width 8.2 mm, clamping range ø10...18 mm KH8
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Actuator arm, for 3/4" shafts, clamping range ø10...22 mm, Slot width 8.2 mm KH-AFB
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Form fit insert 10x10 mm, Multipack 20 pcs. ZF10-NSA-F
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Form fit insert 12x12 mm, Multipack 20 pcs. ZF12-NSA-F
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Form fit insert 15x15 mm, Multipack 20 pcs. ZF15-NSA-F
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Form fit insert 16x16 mm, Multipack 20 pcs. ZF16-NSA-F
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Mounting kit for linkage operation for flat and side installation ZG-AFB
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Baseplate extension Z-SF
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Anti-rotation mechanism 230 mm, Multipack 20 pcs. Z-ARS230L
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Hand crank 63 mm ZKN2-B
Why Choose the Belimo NFA-S2 Rotary Actuator?
Versatile Operation: This actuator is compatible with a wide range of voltages and is suitable for various industrial applications.
Reliable Performance: Designed for long-lasting durability with a minimum service life of 60,000 fail-safe positions.
Enhanced Safety: Complies with multiple international standards, ensuring safe and efficient operation.
User-Friendly: Features like manual override and adjustable angle of rotation make it easy to use and install.
Maintenance-Free: Requires no regular maintenance, offering hassle-free operation.
Discover More:
Explore our comprehensive range of Belimo products at https://ecospares.co.uk/collections/belimo. For assistance, contact us at 01772 284 626. Our expert team is ready to help you find the perfect solution for your engineering needs.
