Siemens GRD221.1U Fail-Safe Actuator with Spring Return
The Siemens GRD221.1U is a fail-safe electric actuator for dampers with spring return, featuring on/off operation. It is powered by 120V AC and has a 1/2" round shaft with hardwired electrical connection. This…
SKU 3G-OTH-68179
Also listed as: GRD2211U · GRD221 1U · GRD221-1U
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
The Siemens GRD221.1U is a fail-safe electric actuator for dampers with spring return, featuring on/off operation. It is powered by 120V AC and has a 1/2" round shaft with hardwired electrical connection. This plenum-rated actuator delivers 30 lb-in of torque.
Frequently Asked Questions
What is the Siemens GRD221.1U electric actuator used for?
The Siemens GRD221.1U is a fail-safe electric actuator designed for damper control in HVAC systems. It provides on/off operation with spring return, ensuring dampers close or open safely during power loss. This plenum-rated unit is suitable for air-handling and ventilation applications.
What are the specifications of the Siemens GRD221.1U actuator?
The Siemens GRD221.1U operates on 120V AC input voltage and delivers 30 lb-in of torque. It features a 1/2" round shaft, hardwired electrical connection, and plenum-rated cables. The actuator is configured for on/off, spring-return fail-safe operation.
Where to buy the Siemens GRD221.1U actuator worldwide?
3G Electric supplies the Siemens GRD221.1U actuator to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source and deliver genuine Siemens equipment for HVAC and damper control applications.
How to install the Siemens GRD221.1U spring return actuator?
Mount the actuator directly onto a 1/2" round damper shaft using the provided bracket. Connect the hardwired plenum-rated cables to a 120V AC power source following local electrical codes. Ensure the spring return direction matches damper fail-safe requirements before powering on.
Used in
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.
