Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

Siemens GND121.1U/F Damper Actuator - Replacement HVACR Pumps, Valves & Tubing
SiemensReplacement HVACR Pumps, Valves & Tubing

Siemens GND121.1U/F Damper Actuator

Siemens Replacement HVACR Pumps, Valves & Tubing. Specifications: Product Type: Damper Actuator.

SKU 3G-OTH-75258

Also listed as: GND1211UF · GND121 1U F · GND121-1U-F

Brand
Siemens
Item
GND121.1U/F Damper Actuator
Category
Replacement HVACR Pumps, Valves & Tubing
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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
GND121.1U/F
Product Type
Damper Actuator

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

Siemens Replacement HVACR Pumps, Valves & Tubing. Specifications: Product Type: Damper Actuator.

Frequently Asked Questions

What is the Siemens GND121.1U/F damper actuator used for?

The Siemens GND121.1U/F damper actuator is used in HVAC systems to control air dampers in ventilation, air handling, and zone control applications. It modulates damper position based on control signals, ensuring precise airflow management in commercial and industrial buildings.

What are the specifications of the Siemens GND121.1U/F damper actuator?

The Siemens GND121.1U/F is a damper actuator with manufacturer part number GND121.1U/F. It is designed for HVACR applications, typically operating at 24 VAC/VDC with a control signal range. For exact torque, stroke, and electrical ratings, consult the Siemens technical datasheet.

Where to buy the Siemens GND121.1U/F damper actuator worldwide?

3G Electric supplies the Siemens GND121.1U/F damper actuator to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this Siemens actuator.

How to install the Siemens GND121.1U/F damper actuator?

Install the Siemens GND121.1U/F damper actuator by mounting it directly onto the damper shaft using the provided bracket. Ensure the actuator is aligned with the shaft, apply power per the voltage rating, and connect control wiring per the wiring diagram. Follow Siemens installation instructions for torque settings and shaft adapter use.

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 replacement hvacr pumps, valves & tubing. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Pump Accessories Valves & Regulation Motors & Drives All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
The Siemens SQM48.497B9 is a combustion actuator designed for precise control of fuel and air dampers in industrial burners and HVAC systems. It is commonly used in boilers, furnaces, and process heaters to maintain optimal combustion efficiency
Siemens
The Siemens SQM48.497B9 is a combustion actuator designed for precise control of fuel and air dampers in industrial burners and HVAC systems. It is commonly used in boilers, furnaces, and process heaters to maintain optimal combustion efficiency
Pneumatic positioner for damper actuators and pneumatic valves. Provides precise positioning control for modulating air flow in HVAC and process control systems. Compatible with Siemens Model 599 pneumatic actuators
Siemens
Pneumatic positioner for damper actuators and pneumatic valves. Provides precise positioning control for modulating air flow in HVAC and process control systems. Compatible with Siemens Model 599 pneumatic actuators
This hydronic globe valve is designed for regulating water flow in HVAC heating and cooling loops. It is suitable for use in commercial and industrial systems requiring precise flow control. The valve is a replacement part for existing hydronic applications
Siemens
This hydronic globe valve is designed for regulating water flow in HVAC heating and cooling loops. It is suitable for use in commercial and industrial systems requiring precise flow control. The valve is a replacement part for existing hydronic applications
This non-fail-safe damper actuator is designed for use in HVAC systems to control dampers in air handling units, zone dampers, and ventilation controls. It features a self-centering shaft, operates on 24V AC/DC input voltage, and provides a 0 to 10V DC output signal for precise positioning. With 53 in-lb torque and a floating-point, non-spring-return design, it is suitable for applications requiring reliable modulation without fail-safe functionality
Siemens
This non-fail-safe damper actuator is designed for use in HVAC systems to control dampers in air handling units, zone dampers, and ventilation controls. It features a self-centering shaft, operates on 24V AC/DC input voltage, and provides a 0 to 10V DC output signal for precise positioning. With 53 in-lb torque and a floating-point, non-spring-return design, it is suitable for applications requiring reliable modulation without fail-safe functionality
Siemens OpenAir damper actuator GMA121.1E
Siemens
Siemens OpenAir damper actuator GMA121.1E
The SCHNEIDER MP-5233 is a damper actuator used in HVAC systems to control air dampers in commercial buildings. It provides precise positioning of dampers in air-handling units and zone control applications for heating, cooling, and ventilation
SCHNEIDER
The SCHNEIDER MP-5233 is a damper actuator used in HVAC systems to control air dampers in commercial buildings. It provides precise positioning of dampers in air-handling units and zone control applications for heating, cooling, and ventilation

More from Siemens

View all Siemens parts
This valve assembly is a replacement component for HVACR systems, used to control the flow of fluid or gas in heating, ventilation, air conditioning, and refrigeration applications. It is typically installed in piping networks to regulate temperature and pressure
Siemens
This valve assembly is a replacement component for HVACR systems, used to control the flow of fluid or gas in heating, ventilation, air conditioning, and refrigeration applications. It is typically installed in piping networks to regulate temperature and pressure
The Siemens SAS61.33U is an electric valve actuator for use in HVAC and building automation systems. It modulates valves controlling water or steam flow in heating, ventilation, and air conditioning applications
Siemens
The Siemens SAS61.33U is an electric valve actuator for use in HVAC and building automation systems. It modulates valves controlling water or steam flow in heating, ventilation, and air conditioning applications
Gas valve for controlling gas flow in HVAC systems, industrial burners, and boilers. Used in commercial heating and combustion processes
Siemens
Gas valve for controlling gas flow in HVAC systems, industrial burners, and boilers. Used in commercial heating and combustion processes
This Siemens zone valve is designed for hydronic HVAC systems, controlling water flow to regulate temperature in individual zones. It opens or closes based on thermostat demand, enabling efficient energy distribution in commercial heating and cooling applications
Siemens
This Siemens zone valve is designed for hydronic HVAC systems, controlling water flow to regulate temperature in individual zones. It opens or closes based on thermostat demand, enabling efficient energy distribution in commercial heating and cooling applications
The Siemens VMP42.12(2) is a zone valve for controlling fluid flow in HVAC heating and cooling systems. It regulates water or glycol flow to individual zones in hydronic systems, fan coil units, and heat exchangers. This valve is used as a replacement component in commercial or industrial HVACR applications
Siemens
The Siemens VMP42.12(2) is a zone valve for controlling fluid flow in HVAC heating and cooling systems. It regulates water or glycol flow to individual zones in hydronic systems, fan coil units, and heat exchangers. This valve is used as a replacement component in commercial or industrial HVACR applications
This Siemens zone valve controls fluid flow in hydronic HVAC systems, used for zoning heating or cooling loops. It opens or closes in response to thermostat signals to regulate temperature in individual zones
Siemens
This Siemens zone valve controls fluid flow in hydronic HVAC systems, used for zoning heating or cooling loops. It opens or closes in response to thermostat signals to regulate temperature in individual zones
The Siemens SQM45.295B9 is an actuator for HVACR systems, used to control dampers, valves, and burners in commercial and industrial heating, ventilation, and air conditioning installations. It modulates air or fuel flow for precise system regulation
Siemens
The Siemens SQM45.295B9 is an actuator for HVACR systems, used to control dampers, valves, and burners in commercial and industrial heating, ventilation, and air conditioning installations. It modulates air or fuel flow for precise system regulation
The Siemens VMP42.10(2) is a hydronic globe valve designed for regulating water flow in HVAC systems. It is suitable for use in heating and cooling applications, including commercial buildings, district heating networks, and industrial process loops where precise flow control is required
Siemens
The Siemens VMP42.10(2) is a hydronic globe valve designed for regulating water flow in HVAC systems. It is suitable for use in heating and cooling applications, including commercial buildings, district heating networks, and industrial process loops where precise flow control is required