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Siemens Electric Actuator: Fire and Smoke Dampers, On/Off, Spring Return, 200 lb-in - Fire & Smoke Rated Actuators
SiemensFire & Smoke Rated Actuators

Siemens Electric Actuator: Fire and Smoke Dampers, On/Off, Spring Return, 200 lb-in

The Siemens GVD221.1U is a fire and smoke rated electric actuator designed for fire and smoke dampers. It operates as an on/off, spring return unit with 200 lb-in torque and accepts a 1/2" to 1" round shaft. The…

SKU 3G-OTH-66905

Brand
Siemens
Item
Electric Actuator: Fire and Smoke Dampers, On/Off, Spring Return, 200 lb-in
Category
Fire & Smoke Rated Actuators
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Technical Specifications

Siemens
Manufacturer Part Number
GVD221.1U
Type
On/Off, Spring Return, 200 lb-in, NEMA 1 / IP40
AC
120V
Shaft Type
1/2" to 1" Round
Input Voltage
120V AC
Plenum Rating
Plenum Rated
Auxiliary Switch Included
No
Electrical Connection Type
Hardwired
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens GVD221.1U is a fire and smoke rated electric actuator designed for fire and smoke dampers. It operates as an on/off, spring return unit with 200 lb-in torque and accepts a 1/2" to 1" round shaft. The actuator requires a 120V AC input, is plenum rated, and features a hardwired electrical connection with NEMA 1 / IP40 enclosure.

Frequently Asked Questions

What is the Siemens GVD221.1U electric actuator used for?

The Siemens GVD221.1U is a fire and smoke rated electric actuator used to open and close fire and smoke dampers in HVAC systems. It provides 200 lb-in torque with spring return for fail-safe operation, making it suitable for life safety applications in commercial buildings.

What are the specifications of the Siemens GVD221.1U actuator?

The Siemens GVD221.1U is an on/off spring return actuator with 200 lb-in torque, accepting a 1/2" to 1" round shaft. It operates on 120V AC input, is plenum rated, and has a NEMA 1 / IP40 enclosure with hardwired connection. No auxiliary switch is included.

Where to buy the Siemens GVD221.1U actuator worldwide?

You can source the Siemens GVD221.1U actuator through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this fire and smoke damper actuator.

How to install the Siemens GVD221.1U fire and smoke damper actuator?

Install the Siemens GVD221.1U by mounting it on a 1/2" to 1" round damper shaft, ensuring the spring return direction matches damper fail-safe position. Hardwire 120V AC per wiring diagram, verify plenum rating compliance, and test cycle before commissioning. Follow Siemens installation manual for torque settings.

Used in

Common applications for Siemens
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks

Siemens Products

3G Electric supplies Siemens fire & smoke rated actuators. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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