The FSNF24-S US is a UL555S-listed, spring-return actuator designed for fire and smoke dampers.
The FSNF24-S US is a UL555S-listed, spring-return actuator designed for fire and smoke dampers. Operating on 24 VAC/DC, it provides reliable fail-safe operation and includes dual auxiliary switches for position feedback. It’s engineered to perform even in high-temperature conditions up to 350°F (177°C) for short durations.
