FSTF120-S US | Belimo Fire And Smoke Actuator 18 In Lb 120VAC On Off

Belimo · Fire & Life Safety

Description  The Belimo FSTF120-S US is a fire and smoke damper actuator designed to provide reliable on/off control with spring return safety operation in life-safety HVAC systems. Operating on 120 VAC power, it delivers 18 in-lb torque and certified performance under elevated temperature conditions.     Technical Specifications  Condition New/Never Used Surplus Brand Belimo Category Fire & Smoke Actuators Part Number FSTF120-S US Subcategory Spring Return Fire & Smoke Actuators Actuator Type Fire & Smoke Damper Actuator Control Type On/Off Nominal Voltage AC 120 V Nominal Frequency 50/60 Hz Voltage Range AC 96…132 V Torque Output 18 in-lb (2 Nm) Spring Return Yes Power Consumption (Operation) 2 W / 3.5 VA Power Consumption (Rest) 1.5 W / 2.5 VA Inrush Current 2.1 A Auxiliary Switches 2 × SPST Angle of Rotation 95° Running Time 75 s / 90° Electrical Connection 1 m cables with 1/2" NPT conduit connectors Protection Rating NEMA 2 Ambient Temperature 32…122°F (0…50°C) Weight 1.2 lb (0.57 kg)   Information About FSTF120-S US The FSTF120-S US is part of Belimo’s fire and smoke actuator series developed specifically for life-safety damper applications. It is designed to maintain operational integrity at elevated temperatures, delivering rated torque at 250°F for emergency smoke control scenarios. The actuator features a robust spring return mechanism that ensures automatic fail-safe positioning during power loss or fire events. Certified for plenum installation and compliant with UL and CSA standards, it is widely used in smoke control and fire isolation systems within commercial buildings. Key Features Fire and Smoke Rated Design: Engineered to deliver reliable actuator performance under high-temperature conditions required for life-safety damper operation. 18 in-lb Torque Output: Provides consistent mechanical force to operate fire and smoke dampers during normal and emergency conditions. Spring Return Fail-Safe Operation: Automatically drives the damper to its safety position upon power interruption or system fault. 120 VAC Line Voltage Operation: Allows direct connection to standard building power without the need for external transformers. Dual SPST Auxiliary Switches: Two factory-installed switches provide damper position indication and interlocking for fire alarm or control systems. Reversible Fail-Safe Direction: Supports clockwise or counterclockwise fail-safe action through mounting orientation for flexible installation. Plenum-Rated and Certified Construction: Complies with UL 2043 and applicable fire and smoke damper installation standards. The FSTF120-S US delivers the reliability and precision required for critical fire and smoke damper control in life-safety HVAC systems.

Brand: Belimo · Category: Fire & Life Safety

Key features

• Fire and Smoke Rated Design: Engineered to deliver reliable actuator performance under high-temperature conditions required for life-safety damper operation.
• 18 in-lb Torque Output: Provides consistent mechanical force to operate fire and smoke dampers during normal and emergency conditions.
• Spring Return Fail-Safe Operation: Automatically drives the damper to its safety position upon power interruption or system fault.
• 120 VAC Line Voltage Operation: Allows direct connection to standard building power without the need for external transformers.
• Dual SPST Auxiliary Switches: Two factory-installed switches provide damper position indication and interlocking for fire alarm or control systems.
• Reversible Fail-Safe Direction: Supports clockwise or counterclockwise fail-safe action through mounting orientation for flexible installation.
• Plenum-Rated and Certified Construction: Complies with UL 2043 and applicable fire and smoke damper installation standards.

Specifications

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