Overview
The Belimo FSLF120-S US is a spring-return fire and smoke damper actuator designed for emergency fail-safe safety in HVAC systems. Operating at 120V AC with 30 in-lb of torque, it features dual SPST auxiliary switches for position feedback.
Features
- UL555 and UL555S compliant spring-return fail-safe action
- Two integrated SPST auxiliary switches for damper monitoring
- Rapid emergency response time (~15 seconds)
- Direct-coupled mounting requires no extra linkage
- Compact footprint tailored for fire and smoke dampers
Specifications
- Nominal Voltage: 120 V AC
- Torque: 30 in-lb [3.5 Nm]
- Control Type: On/Off
- Auxiliary Switches: 2 x SPST
- Protection Rating: IP30, NEMA 1
- Angle of Rotation: 95°
Applications
- Fire and smoke dampers in HVAC systems
- Combination fire/smoke isolation applications
- Hospitals, schools, and commercial facilities



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