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SiemensFire & Smoke Rated Actuators

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

The Siemens GVD321.1U 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, accepting a 1/2" to 1" round shaft and…

SKU 3G-OTH-67327

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
GVD321.1U
Type
On/Off, Spring Return, 200 lb-in, NEMA 1 / IP40
AC
230V
Shaft Type
1/2" to 1" Round
Input Voltage
230V 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 GVD321.1U 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, accepting a 1/2" to 1" round shaft and powered by 230V AC. This plenum-rated actuator features a hardwired electrical connection and is NEMA 1 / IP40 rated, with no auxiliary switch included.

Frequently Asked Questions

What is the Siemens GVD321.1U electric actuator used for?

The Siemens GVD321.1U is a fire and smoke rated electric actuator designed to operate fire and smoke dampers in HVAC systems. It provides on/off control with spring return for fail-safe closure, making it suitable for life safety applications in commercial buildings requiring plenum-rated components.

What are the specifications of the Siemens GVD321.1U actuator?

The Siemens GVD321.1U delivers 200 lb-in torque, accepts a 1/2" to 1" round shaft, and operates on 230V AC input. It features hardwired electrical connection, NEMA 1 / IP40 enclosure, and plenum rating. This on/off spring return actuator does not include an auxiliary switch.

Where to buy the Siemens GVD321.1U actuator worldwide?

3G Electric supplies the Siemens GVD321.1U actuator to customers worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this fire and smoke damper actuator.

How to install the Siemens GVD321.1U fire and smoke damper actuator?

Install the Siemens GVD321.1U by mounting it on a 1/2" to 1" round damper shaft and securing the bracket. Connect 230V AC power via hardwired terminals per the wiring diagram. Ensure the spring return operates freely and the actuator is oriented for proper damper closure. Follow local codes for fire and smoke damper installation.

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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