Belimo SFA-S2 Damper Actuator – Overview
The SFA-S2 series by Belimo is a powerful spring-return damper actuator designed for high-force applications in HVAC systems. It is specifically built for safety and fail-safe operations, ensuring reliable performance in critical situations. Its spring-return mechanism ensures the damper resets during power failure, essential for fire safety and ventilation systems. The Belimo SFA S2 @ 12350 is the best choice for high-performance damper applications.
Key Features and Benefits
The SFA-S2 actuator’s high torque enables smooth operation of large, heavy dampers, ensuring reliability in demanding HVAC applications. This makes it particularly useful in commercial and industrial HVAC setups where reliable airflow control is necessary. The SFA-S2 actuator offers on/off, floating, and modulating control options, ensuring compatibility with diverse HVAC system requirements.
Another critical aspect is its fast-running time, ensuring that dampers respond quickly during emergencies. In fire and smoke control applications, speed is crucial to prevent the spread of hazardous fumes and ensure occupant safety. The actuator also includes a manual override function, allowing technicians to adjust damper positions manually when needed.
Durability and Installation
Belimo designs the SFA-S2 series with robust and durable housing, making it capable of withstanding harsh environments. It typically comes with an IP54 or higher protection rating, ensuring resistance to dust and water. The actuator mounts directly onto the shaft, simplifying installation and reducing setup time.
The spring-return mechanism not only provides fail-safe functionality but also ensures that the actuator maintains a consistent and reliable performance over time. This makes it a preferred choice for HVAC engineers looking for long-term, maintenance-free solutions.
Applications in HVAC Systems
The SFA-S2 actuator controls fire and smoke dampers, automatically closing or opening them in response to emergency signals. It regulates airflow efficiently in air handling units (AHUs) and enables rapid damper movement in emergency ventilation systems to manage air circulation during fires or critical situations.
Due to its high reliability and fail-safe operation, the SFA-S2 is a common choice for large commercial buildings, hospitals, data centers, shopping malls, and industrial facilities. These environments require strict fire protection and air quality control, making Belimo’s actuators an integral part of the safety infrastructure.
Control Variants and Power Supply
The SFA-S2 series comes in various models with different control types, including:
- On/Off control, where the actuator fully opens or closes the damper.
- Floating control, allowing stepwise adjustments based on system demands.
- Modulating control, providing precise damper positioning for better air regulation.
Power supply options vary depending on the model, with common versions operating at 24V AC/DC or 230V AC. This flexibility allows integration with different building automation and fire safety systems.
Why Choose Belimo SFA-S2?
The SFA-S2 series stands out due to its combination of power, reliability, and safety features. Its spring-return functionality ensures immediate action in power outages, while its fast response time and high torque make it suitable for demanding HVAC applications. With easy installation, multiple control options, and a durable design, it is an excellent choice for engineers and facility managers seeking a fail-safe damper actuator for critical operations.
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