Belimo NFX24-SR N4 24V Spring Return Proportional Damper Actuator NEMA 4

The Belimo NFX24-SR N4 is a 24V spring return proportional damper actuator designed for reliable HVAC damper control in demanding environments. This NEMA 4/4X rated actuator provides weatherproof protection, making it suitable for both indoor and outdoor applications where resistance to dust, dirt, water, and corrosion is essential.

Key Features:

• 24 VAC/DC power supply with low power consumption
• Spring return mechanism for fail-safe positioning (returns to home position on power loss)
• Proportional control with 2 to 10 VDC or 4 to 20 mA control signal
• NEMA 4/4X weatherproof enclosure for harsh environment applications
• Rotating shaft design for standard damper mounting
• 90-degree rotation angle for full damper control
• Position indication for visual verification of damper position
• Manual override capability for testing and emergency operation

This actuator is ideal for commercial HVAC systems requiring precise damper control with fail-safe spring return functionality. The NEMA 4 rating ensures long-term reliability in outdoor air handling units, rooftop units, and other exposed applications. Belimo's proven actuator technology delivers consistent performance with minimal maintenance requirements.