Belimo FSNF120-S-FC Fire Smoke Damper Actuator in-lb Spring Return - 70 120V

The Belimo FSNF120-S-FC is a UL-certified fire and smoke damper actuator designed for life safety applications in commercial HVAC systems. This spring return actuator provides reliable failsafe operation during fire or smoke detection events, automatically returning the damper to its safe position upon power loss.

Key Specifications:

• Torque output: 70 in-lb (8 Nm) for positive damper closure
• Power supply: 120V AC, 60 Hz
• Control type: On/Off (2-position)
• Spring return failsafe operation for life safety compliance
• Dual 2SPDT auxiliary switches for status indication and interlock control
• Includes 1-meter (3.3 ft) factory-installed cable for quick installation
• UL listed for fire and smoke damper applications
• Compact housing designed for tight mounting spaces

This actuator meets stringent UL 555 and UL 555S standards for fire and smoke dampers, making it ideal for applications requiring code-compliant life safety systems. The dual auxiliary switches allow for remote damper position monitoring and integration with building management systems or fire alarm panels.