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SiemensFire & Smoke Rated Actuators

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

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

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

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 

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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.

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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