Description
The Belimo FSTF24-S is a Fire & Smoke (F&S) damper actuator engineered for reliable, fail-safe control of smoke and combination fire/smoke dampers in commercial HVAC and life-safety applications. Powered by 24 VAC/DC, this spring return actuator provides dependable ON/OFF two-position control, automatically returning the damper to its fail-safe position upon loss of power — a critical feature for smoke containment and life-safety compliance.
Key Features
- 24 VAC/DC power supply for flexible installation compatibility
- ON/OFF (two-position) control for straightforward integration with building automation and fire alarm systems
- Spring return (S/R) fail-safe operation — damper returns to safe position on power loss
- UL 555S listed for use on smoke dampers in life-safety systems
- Direct-mount design for fast, tool-free installation on standard damper shafts
- Compact, rugged housing suitable for demanding commercial environments
- Manual override for commissioning and service convenience
Specifications
- Model: FSTF24-S
- Brand: Belimo
- Supply Voltage: 24 VAC/DC
- Control Type: ON/OFF (Two-Position)
- Actuator Type: Spring Return (Fail-Safe)
- Application: Fire & Smoke Dampers
- Listing: UL 555S
Applications
- Smoke damper control in commercial HVAC systems
- Combination fire/smoke damper actuation
- Life-safety and building automation system integration
- New construction and retrofit installations
The Belimo FSTF24-S is the trusted choice for HVAC contractors and building engineers who demand code-compliant, reliable performance in life-safety damper applications. Its spring return mechanism ensures automatic fail-safe closure, meeting the stringent requirements of NFPA 90A and UL 555S standards.







Reviews
There are no reviews yet.