Overview
The Belimo FSTF230 US is a spring-return fire and smoke damper actuator engineered for reliable on/off emergency positioning in HVAC systems.
Features
- Fast-acting mechanical spring-return safety function
- Tested to meet UL555 and UL555S damper requirements
- Teeth-in-clamp mounting maintains connection on solid or hollow shafts
- Reversible fail-safe rotation direction
Specifications
- Actuator Type: Spring return
- Voltage: AC 230 V
- Control Type: On/Off
- Torque: 18 in-lb [2 Nm]
- Power Consumption (Running): 5 W
- Running Time (Fail-safe): <25 s
- Degree of Protection: IP42, NEMA 2, UL Enclosure Type 2
Applications
- Operation of combination fire and smoke dampers in air handling units
- Fail-safe duct airflow shut-off in commercial facilities



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