Spring return damper actuators

Spring return damper actuators

The NAFA series Spring Return actuators are specifically designed for air dampers, rotary valves, and other critical HVAC applications that require a fail-safe function. These actuators ensure the system returns to a predetermined safe position in the event of a power failure, making them a reliable choice for safety-critical ventilation and air control systems.

During normal operation, the NAFA actuators motorize the damper to the required position. However, when the power supply is interrupted, the built-in spring return mechanism automatically drives the damper back to its default (fail-safe) position. This feature is crucial in emergency situations, such as fire safety applications or pressure control systems, ensuring optimal protection and airflow management.

Features:

• Fail-safe function: Automatically returns to the default position in case of power loss.
• Torque options: 3 – 20 Nm, suitable for a wide range of damper sizes.
• Power supply: Available in 230 VAC or 24 VAC/VDC, offering flexibility for different system requirements.
• Running time: 25 – 75 seconds, allowing precise and controlled operation.
• Auxiliary switches (optional): 1 or 2 adjustable SPDT auxiliary switches for enhanced monitoring and control.

The NAFA series actuators are designed for durability, efficiency, and reliability, making them an ideal solution for HVAC, fire safety, and air pressure regulation applications. Their compact and robust design ensures long-lasting performance, even in demanding environments.