Overview
The Belimo FSTF24.1 US is a compact On/Off spring return actuator designed for small fire and smoke dampers. Powered by 24V AC/DC, it delivers automatic fail-safe positioning during emergency events.
Features
- Spring return fail-safe action upon loss of power
- Low-profile design fits compact air damper enclosures
- On/Off control interface for standard safety control circuits
- Reversible rotation by CW or CCW shaft mounting
- UL555/UL555S listed for commercial life-safety applications
Specifications
- Actuator Type: Spring return
- Torque: 18 in-lb [2 Nm]
- Voltage: AC/DC 24 V
- Control Type: On/Off
- Angle of Rotation: 95°
- Degree of Protection: IP42, NEMA 2, UL Enclosure Type 2
Applications
- Small fire and smoke damper control in 24V commercial ducting
- Smoke compartmentation and life-safety air isolation



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