Siemens Building Technology GRD126.1U Actuator
The Siemens Building Technology GRD126.1U Actuator is a heavy-duty 24V fire and smoke damper actuator designed for two-position control in high-stakes life safety systems. Delivering 30 lb-in torque, this spring return actuator is engineered to meet UL 555 and UL 555S standards, ensuring dampers reach a fail-safe position during a power loss or fire event. With a rapid 30-second drive time and a 15-second spring return, it manages combination fire/smoke dampers with precision in both residential and commercial HVAC environments. The integrated dual auxiliary switches (fixed at 5° and 85°) provide critical end-position feedback to the building automation system, while the NEMA 1 plenum-rated housing allows for direct installation in air-handling spaces without additional enclosures. Built as a direct-drive rotary solution, it features electronic fusible link (EFL) capability, providing 165°F, 212°F, or 250°F thermal protection when paired with the appropriate Siemens ASK791 series links.
Key Benefits:- High-Temperature Durability: Rated for one-time operation at 350°F per UL555S to ensure failsafe closure in extreme fire conditions.
- Dual Auxiliary Switches: Includes two internal fixed auxiliary switches for seamless end-stop verification and system status monitoring.
- Plenum-Rated Versatility: Features a rugged NEMA 1 housing that is UL listed for air-handling spaces, simplifying ductwork installation.
- Fail-Safe Reliability: Reliable mechanical spring return ensures the damper closes tightly upon power failure or fire alarm activation.
- Broad Compatibility: Works with 24 VAC/VDC power supplies and integrates easily with most modern fire alarm and BAS architectures.
Is the GRD126.1U compatible with electronic fusible links?
Yes, this unit is designed with EFL capability. It interfaces directly with Siemens ASK791 series electronic fusible links to trigger fail-safe closure when temperature thresholds are exceeded.
Can I use this for modulating damper control?
No, this is a two-position 24V actuator (on/off). For proportional or modulating signals (0-10V), a different OpenAir series actuator would be required.
Does it require a special mounting bracket?
The GRD126.1U is a direct-coupled actuator that fits standard damper shafts, but it includes an anti-rotation bracket to ensure stability during high-torque 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 GRD126.1U Actuator
The Siemens Building Technology GRD126.1U Actuator is a heavy-duty 24V fire and smoke damper actuator designed for two-position control in high-stakes life safety systems. Delivering 30 lb-in torque, this spring return actuator is engineered to meet UL 555 and UL 555S standards, ensuring dampers reach a fail-safe position during a power loss or fire event. With a rapid 30-second drive time and a 15-second spring return, it manages combination fire/smoke dampers with precision in both residential and commercial HVAC environments. The integrated dual auxiliary switches (fixed at 5° and 85°) provide critical end-position feedback to the building automation system, while the NEMA 1 plenum-rated housing allows for direct installation in air-handling spaces without additional enclosures. Built as a direct-drive rotary solution, it features electronic fusible link (EFL) capability, providing 165°F, 212°F, or 250°F thermal protection when paired with the appropriate Siemens ASK791 series links.
Key Benefits:- High-Temperature Durability: Rated for one-time operation at 350°F per UL555S to ensure failsafe closure in extreme fire conditions.
- Dual Auxiliary Switches: Includes two internal fixed auxiliary switches for seamless end-stop verification and system status monitoring.
- Plenum-Rated Versatility: Features a rugged NEMA 1 housing that is UL listed for air-handling spaces, simplifying ductwork installation.
- Fail-Safe Reliability: Reliable mechanical spring return ensures the damper closes tightly upon power failure or fire alarm activation.
- Broad Compatibility: Works with 24 VAC/VDC power supplies and integrates easily with most modern fire alarm and BAS architectures.
Is the GRD126.1U compatible with electronic fusible links?
Yes, this unit is designed with EFL capability. It interfaces directly with Siemens ASK791 series electronic fusible links to trigger fail-safe closure when temperature thresholds are exceeded.
Can I use this for modulating damper control?
No, this is a two-position 24V actuator (on/off). For proportional or modulating signals (0-10V), a different OpenAir series actuator would be required.
Does it require a special mounting bracket?
The GRD126.1U is a direct-coupled actuator that fits standard damper shafts, but it includes an anti-rotation bracket to ensure stability during high-torque 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.
Product Information
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Description
The Siemens Building Technology GRD126.1U Actuator is a heavy-duty 24V fire and smoke damper actuator designed for two-position control in high-stakes life safety systems. Delivering 30 lb-in torque, this spring return actuator is engineered to meet UL 555 and UL 555S standards, ensuring dampers reach a fail-safe position during a power loss or fire event. With a rapid 30-second drive time and a 15-second spring return, it manages combination fire/smoke dampers with precision in both residential and commercial HVAC environments. The integrated dual auxiliary switches (fixed at 5° and 85°) provide critical end-position feedback to the building automation system, while the NEMA 1 plenum-rated housing allows for direct installation in air-handling spaces without additional enclosures. Built as a direct-drive rotary solution, it features electronic fusible link (EFL) capability, providing 165°F, 212°F, or 250°F thermal protection when paired with the appropriate Siemens ASK791 series links.
Key Benefits:- High-Temperature Durability: Rated for one-time operation at 350°F per UL555S to ensure failsafe closure in extreme fire conditions.
- Dual Auxiliary Switches: Includes two internal fixed auxiliary switches for seamless end-stop verification and system status monitoring.
- Plenum-Rated Versatility: Features a rugged NEMA 1 housing that is UL listed for air-handling spaces, simplifying ductwork installation.
- Fail-Safe Reliability: Reliable mechanical spring return ensures the damper closes tightly upon power failure or fire alarm activation.
- Broad Compatibility: Works with 24 VAC/VDC power supplies and integrates easily with most modern fire alarm and BAS architectures.
Is the GRD126.1U compatible with electronic fusible links?
Yes, this unit is designed with EFL capability. It interfaces directly with Siemens ASK791 series electronic fusible links to trigger fail-safe closure when temperature thresholds are exceeded.
Can I use this for modulating damper control?
No, this is a two-position 24V actuator (on/off). For proportional or modulating signals (0-10V), a different OpenAir series actuator would be required.
Does it require a special mounting bracket?
The GRD126.1U is a direct-coupled actuator that fits standard damper shafts, but it includes an anti-rotation bracket to ensure stability during high-torque 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.
