Belimo FSTF120-S Actuator
The Belimo FSTF120-S Actuator is a critical safety component designed for fire and smoke damper applications in complex HVACR systems. Engineering to withstand extreme conditions, this spring return actuator is UL555 and UL555S listed, maintaining operation at temperatures up to 250°F. As a 120v HVAC actuator, it provides reliable on/off damper control with a nominal torque of 18 in-lb, typically suitable for dampers up to 1.5 sq. ft. This specific "-S" model features two integrated SPST auxiliary switches for precise end-position indication or interlock safety control. The cold-weld clamp design ensures a secure, slip-free connection to damper shafts ranging from 1/4” to 1/2” without crushing hollow shafts. Built for durability, it uses a brushless DC motor technology to eliminate end-stop damage and reduce power consumption while in a holding position.
Key Benefits- UL555S Listing: Qualified for life safety applications in smoke and combination fire/smoke dampers.
- Fail-Safe Reliability: Mechanical spring return ensures the damper returns to the safety position during power loss.
- Auxiliary Switches: Two built-in SPST switches (fixed at 10° and 80°) provide reliable feedback to the Fire Alarm or BAS.
- Versatile Mounting: Simple CW/CCW reversibility by flipping the actuator on the shaft.
- Low Maintenance: Brushless technology and overload protection throughout the 95° rotation ensure long-term field performance.
Is the FSTF120-S suitable for all damper sizes?
The FSTF series is categorized for smaller dampers, generally up to 1.5 sq. ft. at 2000 fpm. For larger surface areas, consider upgrading to the FSLF or FSNF series to ensure sufficient torque for tight seal closure.
Can I power multiple FSTF120-S actuators in parallel?
Yes, parallel wiring is supported; however, the contractor must account for the total VA draw (5 VA per unit) to ensure the transformer or circuit is not overloaded.
Does this unit require a ground connection?
The actuator is double-insulated and meets cULus requirements; standard models do not require an electrical ground for safe operation.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $332.50
-65%$332.50
$116.37Belimo FSTF120-S Actuator
The Belimo FSTF120-S Actuator is a critical safety component designed for fire and smoke damper applications in complex HVACR systems. Engineering to withstand extreme conditions, this spring return actuator is UL555 and UL555S listed, maintaining operation at temperatures up to 250°F. As a 120v HVAC actuator, it provides reliable on/off damper control with a nominal torque of 18 in-lb, typically suitable for dampers up to 1.5 sq. ft. This specific "-S" model features two integrated SPST auxiliary switches for precise end-position indication or interlock safety control. The cold-weld clamp design ensures a secure, slip-free connection to damper shafts ranging from 1/4” to 1/2” without crushing hollow shafts. Built for durability, it uses a brushless DC motor technology to eliminate end-stop damage and reduce power consumption while in a holding position.
Key Benefits- UL555S Listing: Qualified for life safety applications in smoke and combination fire/smoke dampers.
- Fail-Safe Reliability: Mechanical spring return ensures the damper returns to the safety position during power loss.
- Auxiliary Switches: Two built-in SPST switches (fixed at 10° and 80°) provide reliable feedback to the Fire Alarm or BAS.
- Versatile Mounting: Simple CW/CCW reversibility by flipping the actuator on the shaft.
- Low Maintenance: Brushless technology and overload protection throughout the 95° rotation ensure long-term field performance.
Is the FSTF120-S suitable for all damper sizes?
The FSTF series is categorized for smaller dampers, generally up to 1.5 sq. ft. at 2000 fpm. For larger surface areas, consider upgrading to the FSLF or FSNF series to ensure sufficient torque for tight seal closure.
Can I power multiple FSTF120-S actuators in parallel?
Yes, parallel wiring is supported; however, the contractor must account for the total VA draw (5 VA per unit) to ensure the transformer or circuit is not overloaded.
Does this unit require a ground connection?
The actuator is double-insulated and meets cULus requirements; standard models do not require an electrical ground for safe operation.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Belimo FSTF120-S Actuator is a critical safety component designed for fire and smoke damper applications in complex HVACR systems. Engineering to withstand extreme conditions, this spring return actuator is UL555 and UL555S listed, maintaining operation at temperatures up to 250°F. As a 120v HVAC actuator, it provides reliable on/off damper control with a nominal torque of 18 in-lb, typically suitable for dampers up to 1.5 sq. ft. This specific "-S" model features two integrated SPST auxiliary switches for precise end-position indication or interlock safety control. The cold-weld clamp design ensures a secure, slip-free connection to damper shafts ranging from 1/4” to 1/2” without crushing hollow shafts. Built for durability, it uses a brushless DC motor technology to eliminate end-stop damage and reduce power consumption while in a holding position.
Key Benefits- UL555S Listing: Qualified for life safety applications in smoke and combination fire/smoke dampers.
- Fail-Safe Reliability: Mechanical spring return ensures the damper returns to the safety position during power loss.
- Auxiliary Switches: Two built-in SPST switches (fixed at 10° and 80°) provide reliable feedback to the Fire Alarm or BAS.
- Versatile Mounting: Simple CW/CCW reversibility by flipping the actuator on the shaft.
- Low Maintenance: Brushless technology and overload protection throughout the 95° rotation ensure long-term field performance.
Is the FSTF120-S suitable for all damper sizes?
The FSTF series is categorized for smaller dampers, generally up to 1.5 sq. ft. at 2000 fpm. For larger surface areas, consider upgrading to the FSLF or FSNF series to ensure sufficient torque for tight seal closure.
Can I power multiple FSTF120-S actuators in parallel?
Yes, parallel wiring is supported; however, the contractor must account for the total VA draw (5 VA per unit) to ensure the transformer or circuit is not overloaded.
Does this unit require a ground connection?
The actuator is double-insulated and meets cULus requirements; standard models do not require an electrical ground for safe operation.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
