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SiemensFire & Smoke Rated Actuators

Siemens GVD121.1U Fire & Smoke Rated Actuator

The Siemens GVD121.1U is a fire and smoke rated electric actuator designed for fire and smoke dampers. It features an on/off, spring return operation with 200 lb-in torque, accepts a 1/2" to 1" round shaft, and…

SKU 3G-OTH-67354

Also listed as: GVD1211U · GVD121 1U · GVD121-1U

Brand
Siemens
Item
GVD121.1U Fire & Smoke Rated Actuator
Part Number
GVD121.1U
Category
Fire & Smoke Rated Actuators
Available to Order
Also known as:GVD121.1USiemens
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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

Technical Specifications

Siemens
Manufacturer Part Number
GVD121.1U
Type
On/Off, Spring Return, 200 lb-in, NEMA 1 / IP40
AC
24V
Shaft Type
1/2" to 1" Round
Input Voltage
24V AC
Plenum Rating
Plenum Rated
Auxiliary Switch Included
No
Electrical Connection Type
Hardwired

Technical Documents

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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens GVD121.1U is a fire and smoke rated electric actuator designed for fire and smoke dampers. It features an on/off, spring return operation with 200 lb-in torque, accepts a 1/2" to 1" round shaft, and operates on 24V AC. This plenum-rated actuator is hardwired and does not include an auxiliary switch.

Frequently Asked Questions

What is the Siemens GVD121.1U electric actuator used for?

The Siemens GVD121.1U is a fire and smoke rated electric actuator designed to operate fire and smoke dampers in HVAC systems. It provides on/off, spring return control with 200 lb-in torque, ensuring dampers close or open reliably during fire safety events in commercial buildings.

What are the specifications of the Siemens GVD121.1U actuator?

The Siemens GVD121.1U operates on 24V AC with on/off, spring return action and 200 lb-in torque. It accepts a 1/2" to 1" round shaft, is plenum rated, hardwired, and has NEMA 1 / IP40 enclosure. No auxiliary switch is included. The manufacturer part number is GVD121.1U.

Where to buy the Siemens GVD121.1U actuator worldwide?

You can source the Siemens GVD121.1U actuator through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time; we supply genuine Siemens components for fire and smoke damper applications.

How to install the Siemens GVD121.1U fire and smoke actuator?

Mount the Siemens GVD121.1U directly onto the damper shaft (1/2" to 1" round) using the provided bracket. Connect 24V AC power via hardwiring per the wiring diagram. Ensure the spring return direction matches damper fail-safe requirements. Test operation before commissioning. Always follow local codes and the manufacturer's installation manual.

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
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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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