Siemens GMA121.1U Fail-Safe Damper Actuator, Spring Return, 62 in-lb, 24V AC/DC
The Siemens GMA121.1U is a fail-safe damper actuator with spring return, featuring a self-centering shaft coupling and CW/CCW rotation. It operates on 24V AC/DC with a 3.5W power rating and provides a 0 to 10V DC…
SKU 3G-OTH-68380
Also listed as: GMA1211U · GMA121 1U · GMA121-1U
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- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Product Description
The Siemens GMA121.1U is a fail-safe damper actuator with spring return, featuring a self-centering shaft coupling and CW/CCW rotation. It operates on 24V AC/DC with a 3.5W power rating and provides a 0 to 10V DC output signal. This hardwired actuator is Building Automation System Compatible and has a torque rating of 62 in-lb, with a NEMA 1 / IP54 enclosure.
Frequently Asked Questions
What is the Siemens GMA121.1U damper actuator used for?
The Siemens GMA121.1U is a fail-safe damper actuator with spring return, used in building automation systems to control HVAC dampers. It provides 62 in-lb torque on 24V AC/DC and includes a 0 to 10V DC output signal for position feedback, ensuring reliable operation in commercial and industrial environments.
What are the specifications of the Siemens GMA121.1U actuator?
The Siemens GMA121.1U is an On/Off, spring return actuator with 62 in-lb torque, 24V AC/DC input, 3.5W power rating, and a 0 to 10V DC output signal. It features a self-centering shaft coupling, CW/CCW rotation, hardwired connection, and NEMA 1 / IP54 enclosure. It is Building Automation System Compatible.
Where to buy the Siemens GMA121.1U actuator worldwide?
3G Electric supplies the Siemens GMA121.1U damper actuator worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this fail-safe spring return actuator for building automation systems.
How to install the Siemens GMA121.1U spring return actuator?
Mount the Siemens GMA121.1U on the damper shaft using its self-centering shaft coupling, ensuring CW/CCW rotation matches damper direction. Wire the 24V AC/DC input and 0 to 10V DC output per the wiring diagram. Test spring return function before commissioning. Follow Siemens installation manual for torque and clearance requirements.
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3G Electric supplies Siemens fail-safe actuators with spring return. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
