Siemens GQD221.1U Fail-Safe Spring Return Actuator, 20 in-lb, 120V AC, Hardwired
The SIEMENS GQD221.1U is a fail-safe actuator with spring return for dampers and economizers, featuring a self-centering shaft coupling and 90° stroke with CW/CCW rotation. It operates on 120V AC input with a 2 to…
SKU 3G-OTH-67062
Also listed as: GQD2211U · GQD221 1U · GQD221-1U
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Product Description
The SIEMENS GQD221.1U is a fail-safe actuator with spring return for dampers and economizers, featuring a self-centering shaft coupling and 90° stroke with CW/CCW rotation. It operates on 120V AC input with a 2 to 10V DC output signal, is hardwired, and is compatible with building automation systems.
Frequently Asked Questions
What is the Siemens GQD221.1U actuator used for?
The Siemens GQD221.1U is a fail-safe spring return actuator used to control dampers and economizers in HVAC building automation systems. It provides 20 in-lb torque with a 90° stroke and CW/CCW rotation, ensuring reliable damper positioning in commercial ventilation applications.
What are the specifications of the Siemens GQD221.1U actuator?
The Siemens GQD221.1U operates on 120V AC input with a 2 to 10V DC output signal. It features a self-centering shaft coupling, 90° stroke, CW/CCW rotation, and hardwired electrical connection. It is NEMA 1 / IP40 rated, not plenum rated, and compatible with building automation systems.
Where to buy the Siemens GQD221.1U actuator worldwide?
3G Electric supplies the Siemens GQD221.1U actuator worldwide. As a global industrial equipment distributor since 1990, 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.
How to install the Siemens GQD221.1U actuator?
Mount the actuator directly onto the damper shaft using the self-centering coupling, ensuring the shaft rotates freely. Connect 120V AC power and the 2 to 10V DC control signal per the wiring diagram. Verify the spring return direction (CW/CCW) matches damper fail-safe position before commissioning.
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Common applications for SiemensSiemens Products
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.
