Overview
The Belimo FSNF230 US is a fast-acting spring-return actuator designed for emergency fail-safe operation in fire and smoke damper applications.
Features
- High-speed spring return and motor operation in under 15 seconds
- Spring-return fail-safe action ensures immediate close-off during power loss
- Direct-coupled installation onto UL555S listed safety dampers
- Rated for high-temperature safety operation up to 350°F
Specifications
- Torque: 70 in-lb [8 Nm]
- Nominal Voltage: AC 230 V
- Control Signal: On/Off
- Operating Time: < 15 seconds (Motor & Spring Return)
- Maximum Damper Area: Up to 12 sq. ft.
Applications
- Fire and smoke damper control in 230 V building automation systems
- Life safety smoke isolation in commercial facilities



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