Belimo NFA-S2 Spring Return Damper Actuator – Reliable HVAC Control
The Belimo NFA-S2 damper actuator serves as a rotary fail-safe actuator for air control dampers.
The HVAC industry primarily uses it.
Get NFA S2 at lowest price only @ Rs 6350 at BMP Systems, Kolkata.
It provides 10 Nm torque, making it ideal for dampers up to about 2m² in size.
The actuator is compatible with a broad voltage range, operating on AC 24…240 V or DC 24…125 V.
It uses an open/close control mechanism.
It has a running time of 75 seconds for a 90° rotation, while its fail-safe return time is less than 20 seconds
It includes two SPDT auxiliary switches that come pre-installed.
The unit features a manual override system with a hand crank and a locking switch.
Its universal shaft clamp shaft fits 10–25.4 mm, actuator carries an IP54 rating, which prevents dust and water splashes
The ambient operating temperature is -30 to +50°C.
The Belimo NFA-S2 manual provides detailed information on installing, using, and maintaining the rotary fail-safe actuator.
It ensures proper installation and smooth operation in HVAC systems.
🔹 Voltage: AC 24–240V / DC 24–125V
🔹 Torque: 10 Nm
🔹 Control Type: Open/Close
🔹 Fail-Safe Mechanism: Spring Return
🔹 Applications: HVAC dampers, ventilation systems
Why Choose the Belimo NFA-S2 Actuator?
The Belimo NFA-S2 fail-safe actuator precisely controls air dampers in HVAC systems. It ensures automatic return to a safe position during power failures, protecting your ventilation and air handling units.
- Universal Voltage Range – Works with both AC & DC power sources
- Fast Fail-Safe Return – Less than 20 sec at 20–50°C
- Durable & Weatherproof – IP54-rated for protection against dust and moisture
- Easy Installation – Adjustable shaft clamp (10–25.4 mm)
Perfect for HVAC & Industrial Applications
The Belimo NFA-S2 actuator is ideal for fire dampers, control dampers, and VAV systems, ensuring smooth and energy-efficient operation.
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