
Siemens Building Technology GMA126.1U Actuator
The Siemens Building Technology GMA126.1U Actuator is a professional-grade, 2-position spring return air damper actuator engineered for precise control in critical HVACR systems. Operating on a 24V AC/DC power supply, this OpenAir GMA Series unit delivers a robust 62 lb-in torque (7 Nm), making it an ideal choice for managing return air, mixed air, and exhaust dampers. Designed for fail-safe operation, the bi-directional spring return ensures the damper moves to a pre-defined safety position during power loss, with a mechanical closing time of approximately 15 seconds. This specific model features dual auxiliary switches for seamless position feedback and system integration, housed in a durable NEMA 1 (IP54) die-cast aluminum enclosure.
For contractors, the Siemens GMA126.1U offers high reliability through brushless DC motor technology, which minimizes wear and extends service life compared to traditional brushed motors. The self-centering shaft coupling accommodates a wide range of shaft diameters, reducing installation time and ensuring a secure mechanical connection. With a 90-second runtime for powered rotation and a manual override capability, this direct-coupled actuator provides the flexibility needed for both constant and variable air volume applications.
Key Benefits:- Fail-Safe Reliability: Integrated spring return fail-safe mechanism ensures dampers close or open securely during power interruptions.
- Integration Ready: Includes adjustable dual auxiliary switches for enhanced monitoring and automation in complex building management systems.
- Rugged Construction: Features a die-cast aluminum housing designed to withstand the rigors of mechanical rooms and industrial environments.
- Ease of Install: The unique self-centering shaft coupling eliminates the need for specialized mounting brackets on standard 3/8" to 3/4" shafts.
- Efficient Performance: Low power consumption of only 5 VA during operation and 3 W when holding position.
- What is the primary application for the GMA126.1U? It is designed for two-position control of dampers in air handling units, specifically where torque requirements do not exceed 62 lb-in and a fail-safe position is required.
- Does this model include feedback? While it does not provide a continuous 0-10V feedback signal, the dual internal auxiliary switches allow for end-of-travel position confirmation.
- Can it be used in plenum environments? While this "U" model is standard, verify your local code requirements regarding the 3-foot precabled leads; plenum-rated "P" models are typically required for direct air-stream installations.
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: $252.46
-65%$252.46
$88.36Siemens Building Technology GMA126.1U Actuator
The Siemens Building Technology GMA126.1U Actuator is a professional-grade, 2-position spring return air damper actuator engineered for precise control in critical HVACR systems. Operating on a 24V AC/DC power supply, this OpenAir GMA Series unit delivers a robust 62 lb-in torque (7 Nm), making it an ideal choice for managing return air, mixed air, and exhaust dampers. Designed for fail-safe operation, the bi-directional spring return ensures the damper moves to a pre-defined safety position during power loss, with a mechanical closing time of approximately 15 seconds. This specific model features dual auxiliary switches for seamless position feedback and system integration, housed in a durable NEMA 1 (IP54) die-cast aluminum enclosure.
For contractors, the Siemens GMA126.1U offers high reliability through brushless DC motor technology, which minimizes wear and extends service life compared to traditional brushed motors. The self-centering shaft coupling accommodates a wide range of shaft diameters, reducing installation time and ensuring a secure mechanical connection. With a 90-second runtime for powered rotation and a manual override capability, this direct-coupled actuator provides the flexibility needed for both constant and variable air volume applications.
Key Benefits:- Fail-Safe Reliability: Integrated spring return fail-safe mechanism ensures dampers close or open securely during power interruptions.
- Integration Ready: Includes adjustable dual auxiliary switches for enhanced monitoring and automation in complex building management systems.
- Rugged Construction: Features a die-cast aluminum housing designed to withstand the rigors of mechanical rooms and industrial environments.
- Ease of Install: The unique self-centering shaft coupling eliminates the need for specialized mounting brackets on standard 3/8" to 3/4" shafts.
- Efficient Performance: Low power consumption of only 5 VA during operation and 3 W when holding position.
- What is the primary application for the GMA126.1U? It is designed for two-position control of dampers in air handling units, specifically where torque requirements do not exceed 62 lb-in and a fail-safe position is required.
- Does this model include feedback? While it does not provide a continuous 0-10V feedback signal, the dual internal auxiliary switches allow for end-of-travel position confirmation.
- Can it be used in plenum environments? While this "U" model is standard, verify your local code requirements regarding the 3-foot precabled leads; plenum-rated "P" models are typically required for direct air-stream installations.
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 Building Technology GMA126.1U Actuator is a professional-grade, 2-position spring return air damper actuator engineered for precise control in critical HVACR systems. Operating on a 24V AC/DC power supply, this OpenAir GMA Series unit delivers a robust 62 lb-in torque (7 Nm), making it an ideal choice for managing return air, mixed air, and exhaust dampers. Designed for fail-safe operation, the bi-directional spring return ensures the damper moves to a pre-defined safety position during power loss, with a mechanical closing time of approximately 15 seconds. This specific model features dual auxiliary switches for seamless position feedback and system integration, housed in a durable NEMA 1 (IP54) die-cast aluminum enclosure.
For contractors, the Siemens GMA126.1U offers high reliability through brushless DC motor technology, which minimizes wear and extends service life compared to traditional brushed motors. The self-centering shaft coupling accommodates a wide range of shaft diameters, reducing installation time and ensuring a secure mechanical connection. With a 90-second runtime for powered rotation and a manual override capability, this direct-coupled actuator provides the flexibility needed for both constant and variable air volume applications.
Key Benefits:- Fail-Safe Reliability: Integrated spring return fail-safe mechanism ensures dampers close or open securely during power interruptions.
- Integration Ready: Includes adjustable dual auxiliary switches for enhanced monitoring and automation in complex building management systems.
- Rugged Construction: Features a die-cast aluminum housing designed to withstand the rigors of mechanical rooms and industrial environments.
- Ease of Install: The unique self-centering shaft coupling eliminates the need for specialized mounting brackets on standard 3/8" to 3/4" shafts.
- Efficient Performance: Low power consumption of only 5 VA during operation and 3 W when holding position.
- What is the primary application for the GMA126.1U? It is designed for two-position control of dampers in air handling units, specifically where torque requirements do not exceed 62 lb-in and a fail-safe position is required.
- Does this model include feedback? While it does not provide a continuous 0-10V feedback signal, the dual internal auxiliary switches allow for end-of-travel position confirmation.
- Can it be used in plenum environments? While this "U" model is standard, verify your local code requirements regarding the 3-foot precabled leads; plenum-rated "P" models are typically required for direct air-stream installations.
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.












