Belimo NFB24-S Damper Actuator

The Belimo NFB24-S Damper Actuator delivers reliable 24 V operation with a spring-return design, providing On-Off control and an auxiliary switch for enhanced damper positioning and integration in HVAC systems.

With 90 in-lb torque, this unit quickly moves dampers to their open or closed positions and returns to the spring-set state when power is removed.

Designed as a direct replacement, the NFB24-S replaces NF24-S2 and variants NF24-S, ensuring seamless compatibility with existing control panels and wiring. Built for US installations, it fits standard damper assemblies and supports fast installation, troubleshooting, and maintenance.

Key benefits include precise control, simple integration, and dependable performance in residential, commercial, and light-industrial applications. The actuator supports On-Off control with an auxiliary switch, enabling feedback and secure damper positioning for building automation systems.

• Torque: 90 in-lb
• Voltage: 24 V
• Operation: Spring-return On-Off
• Auxiliary switch: Integrated for position feedback
• Compatibility: Replaces NF24-S2 / NF24-S