
Siemens Building Technology GQD121.1P Actuator
The Siemens GQD121.1P is a high-performance OpenAir electronic damper actuator engineered for reliable two-position control in commercial HVAC systems. This spring return rotary actuator delivers 20 lb-in (2 Nm) of torque, making it a professional-grade solution for governing air flow in small dampers, economizer units, and residential zones. Built with a compact footprint, the GQD121.1P facilitates direct-coupled mounting in tight mechanical spaces while maintaining robust fail-safe performance during power interruptions. Operating on a 24V AC/DC power supply, this plenum-rated damper motor integrates seamlessly into building automation frameworks without requiring additional enclosures for ceiling installations. Its motorized runtime typically averages 30 seconds for a full 90-degree stroke, while the mechanical spring return ensures a 15-second fail-safe closure. For technicians and contractors, the pre-cabled 18 AWG 3-foot leads and self-centering shaft adapter simplify wiring and commissioning, ensuring efficient installation on 3/8-inch to 1/2-inch round or 1/4-inch to 7/16-inch square damper shafts.
Key Benefits- Fail-Safe Reliability: Integrated mechanical spring return ensures dampers reach a safe position within 15 seconds during power loss.
- Simplified Installation: Pre-cabled 24V design with a 3-foot plenum-rated cord reduces field wiring time.
- Space-Efficient Design: Small housing footprint allows for easy mounting on compact HVAC dampers and tight economizer sections.
- Versatile Shaft Coupling: Self-centering adapter type accommodates various shaft sizes and shapes for broad compatibility.
- Internal Durability: Rated for 60,000 full-stroke cycles, providing long-term performance in high-demand environments.
Is the GQD121.1P suitable for outdoor use?
This actuator features a NEMA 1 (IP40) rated enclosure and is designed for interior, weather-protected installations. For rooftop units, ensure it is housed within a protected compartment.
What is the maximum damper size this 20 lb-in actuator can handle?
While performance depends on damper friction and air pressure, the 2 Nm torque rating is generally recommended for dampers up to approximately 0.3 square meters (roughly 3 to 4 square feet).
Can I wire multiple GQD actuators in parallel?
Yes, up to 10 actuators of the same type can be wired in parallel, provided the 24V transformer is sized correctly to handle the cumulative VA load (6.5 VA per unit during 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.
Siemens Building Technology GQD121.1P Actuator
The Siemens GQD121.1P is a high-performance OpenAir electronic damper actuator engineered for reliable two-position control in commercial HVAC systems. This spring return rotary actuator delivers 20 lb-in (2 Nm) of torque, making it a professional-grade solution for governing air flow in small dampers, economizer units, and residential zones. Built with a compact footprint, the GQD121.1P facilitates direct-coupled mounting in tight mechanical spaces while maintaining robust fail-safe performance during power interruptions. Operating on a 24V AC/DC power supply, this plenum-rated damper motor integrates seamlessly into building automation frameworks without requiring additional enclosures for ceiling installations. Its motorized runtime typically averages 30 seconds for a full 90-degree stroke, while the mechanical spring return ensures a 15-second fail-safe closure. For technicians and contractors, the pre-cabled 18 AWG 3-foot leads and self-centering shaft adapter simplify wiring and commissioning, ensuring efficient installation on 3/8-inch to 1/2-inch round or 1/4-inch to 7/16-inch square damper shafts.
Key Benefits- Fail-Safe Reliability: Integrated mechanical spring return ensures dampers reach a safe position within 15 seconds during power loss.
- Simplified Installation: Pre-cabled 24V design with a 3-foot plenum-rated cord reduces field wiring time.
- Space-Efficient Design: Small housing footprint allows for easy mounting on compact HVAC dampers and tight economizer sections.
- Versatile Shaft Coupling: Self-centering adapter type accommodates various shaft sizes and shapes for broad compatibility.
- Internal Durability: Rated for 60,000 full-stroke cycles, providing long-term performance in high-demand environments.
Is the GQD121.1P suitable for outdoor use?
This actuator features a NEMA 1 (IP40) rated enclosure and is designed for interior, weather-protected installations. For rooftop units, ensure it is housed within a protected compartment.
What is the maximum damper size this 20 lb-in actuator can handle?
While performance depends on damper friction and air pressure, the 2 Nm torque rating is generally recommended for dampers up to approximately 0.3 square meters (roughly 3 to 4 square feet).
Can I wire multiple GQD actuators in parallel?
Yes, up to 10 actuators of the same type can be wired in parallel, provided the 24V transformer is sized correctly to handle the cumulative VA load (6.5 VA per unit during 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 Siemens GQD121.1P is a high-performance OpenAir electronic damper actuator engineered for reliable two-position control in commercial HVAC systems. This spring return rotary actuator delivers 20 lb-in (2 Nm) of torque, making it a professional-grade solution for governing air flow in small dampers, economizer units, and residential zones. Built with a compact footprint, the GQD121.1P facilitates direct-coupled mounting in tight mechanical spaces while maintaining robust fail-safe performance during power interruptions. Operating on a 24V AC/DC power supply, this plenum-rated damper motor integrates seamlessly into building automation frameworks without requiring additional enclosures for ceiling installations. Its motorized runtime typically averages 30 seconds for a full 90-degree stroke, while the mechanical spring return ensures a 15-second fail-safe closure. For technicians and contractors, the pre-cabled 18 AWG 3-foot leads and self-centering shaft adapter simplify wiring and commissioning, ensuring efficient installation on 3/8-inch to 1/2-inch round or 1/4-inch to 7/16-inch square damper shafts.
Key Benefits- Fail-Safe Reliability: Integrated mechanical spring return ensures dampers reach a safe position within 15 seconds during power loss.
- Simplified Installation: Pre-cabled 24V design with a 3-foot plenum-rated cord reduces field wiring time.
- Space-Efficient Design: Small housing footprint allows for easy mounting on compact HVAC dampers and tight economizer sections.
- Versatile Shaft Coupling: Self-centering adapter type accommodates various shaft sizes and shapes for broad compatibility.
- Internal Durability: Rated for 60,000 full-stroke cycles, providing long-term performance in high-demand environments.
Is the GQD121.1P suitable for outdoor use?
This actuator features a NEMA 1 (IP40) rated enclosure and is designed for interior, weather-protected installations. For rooftop units, ensure it is housed within a protected compartment.
What is the maximum damper size this 20 lb-in actuator can handle?
While performance depends on damper friction and air pressure, the 2 Nm torque rating is generally recommended for dampers up to approximately 0.3 square meters (roughly 3 to 4 square feet).
Can I wire multiple GQD actuators in parallel?
Yes, up to 10 actuators of the same type can be wired in parallel, provided the 24V transformer is sized correctly to handle the cumulative VA load (6.5 VA per unit during 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.












