The Belimo FSAF24A-S is a 24V on/off spring return damper actuator engineered for dependable fail-safe operation in fire, smoke, and combination fire/smoke damper applications. Designed to meet the rigorous demands of life-safety HVAC systems, this actuator provides positive, spring-driven return to the fail-safe position upon loss of power, ensuring code-compliant damper closure when it matters most.
The integrated auxiliary switch provides a dry contact output to confirm damper position, enabling seamless integration with building automation systems, fire alarm panels, and DDC controllers. Its compact, rugged housing is built for long-term reliability in demanding commercial and industrial installations.
Key Features
- 24V AC/DC power supply for broad system compatibility
- On/off control signal for straightforward integration
- Spring return (SR) fail-safe mechanism — returns to closed position on power loss
- Integrated auxiliary switch for position feedback and BAS/fire panel interfacing
- Compact, direct-coupled design — no crank arm or linkage required
- Suitable for fire, smoke, and combination fire/smoke damper applications
- Designed for use in life-safety HVAC systems
Specifications
- Brand: Belimo
- Model / SKU: FSAF24A-S
- Supply Voltage: 24V AC/DC
- Control Type: On/Off
- Actuator Type: Spring Return
- Auxiliary Switch: Included
- Application: Fire & Smoke Damper Actuation
Applications
- Fire and smoke damper control in commercial HVAC systems
- Building automation and DDC system integration
- Life-safety ventilation control in offices, hospitals, schools, and industrial facilities
- Fire alarm panel interfacing via auxiliary switch output
