Belimo NFB24-S Spring Return Damper Actuator 24V 90 in-lb On/Off with Auxiliary Switch

The Belimo NFB24-S is a spring return damper actuator designed for on/off control of HVAC dampers in commercial building automation systems. This actuator features a 24V AC/DC power supply and delivers 90 inch-pounds of torque, making it suitable for controlling medium to large dampers in air handling applications.

Key Features:

• Spring return mechanism ensures fail-safe positioning - damper returns to normal position upon power loss
• 90 inch-pounds (10 Nm) torque output for reliable damper control
• 24V AC/DC universal voltage for flexible installation
• Integrated auxiliary switch for position feedback and monitoring
• On/off control with two-position operation
• Compact, durable housing designed for long-term reliability
• Direct replacement for legacy models NF24-S2 and NF24-S

This actuator is commonly used in VAV systems, exhaust and return air dampers, and outside air economizer applications. The auxiliary switch provides valuable position feedback to building management systems, enabling improved system monitoring and diagnostics. Belimo actuators are known for their precision, reliability, and ease of installation in commercial HVAC applications.