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Siemens Actuator: Dampers, Proportional, Spring Return, 160 in-lb, 24V AC/DC, Hardwired - Fail-Safe Actuators with Spring Return
SiemensFail-Safe Actuators with Spring Return

Siemens Actuator: Dampers, Proportional, Spring Return, 160 in-lb, 24V AC/DC, Hardwired

The Siemens GCA151.1U is a fail-safe spring return damper actuator with a self-centering shaft coupling, rated at 160 in-lb and 5W. It operates on 24V AC/DC input with a 0 to 10V DC output signal, supporting CW/CCW…

SKU 3G-OTH-67738

Also listed as: GCA1511U · GCA151 1U · GCA151-1U

Brand
Siemens
Item
Actuator: Dampers, Proportional, Spring Return, 160 in-lb, 24V AC/DC, Hardwired
Category
Fail-Safe Actuators with Spring Return
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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
GCA151.1U
Type
Proportional, Spring Return, 160 in-lb, Hardwired, NEMA 2 / IP54
AC/DC
24V
Shaft Type
Self-Centering Shaft Coupling
Power Rating
5W
Input Voltage
24V AC/DC
Output Signal
0 to 10V DC
Plenum Rating
Not Plenum Rated
Shaft Rotation
CW/CCW
Auxiliary Switch Included
No
Electrical Connection Type
Hardwired
For Use With Building Automation Systems
Building Automation System Compatible

Technical Documents

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

Product Description

The Siemens GCA151.1U is a fail-safe spring return damper actuator with a self-centering shaft coupling, rated at 160 in-lb and 5W. It operates on 24V AC/DC input with a 0 to 10V DC output signal, supporting CW/CCW shaft rotation. This hardwired, NEMA 2 / IP54 rated actuator is compatible with building automation systems and is not plenum rated.

Frequently Asked Questions

What is the Siemens GCA151.1U actuator used for?

The Siemens GCA151.1U is a fail-safe spring return damper actuator used in HVAC building automation systems to control air dampers in VAV boxes, AHUs, and zone dampers. It provides proportional modulation with a 0 to 10V DC signal and spring return on power loss for safety.

What are the specifications of the Siemens GCA151.1U?

The Siemens GCA151.1U is a proportional spring return actuator rated at 160 in-lb torque and 5W power. It operates on 24V AC/DC input with a 0 to 10V DC output signal. It features a self-centering shaft coupling, CW/CCW rotation, hardwired connection, and NEMA 2 / IP54 enclosure. It is not plenum rated.

Where to buy the Siemens GCA151.1U worldwide?

You can source the Siemens GCA151.1U 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; we provide competitive pricing and reliable sourcing for building automation components.

How to install the Siemens GCA151.1U damper actuator?

Mount the actuator directly onto the damper shaft using the self-centering coupling, ensuring the shaft is fully engaged. Apply 24V AC/DC power and connect the 0 to 10V DC control signal. Verify rotation direction (CW/CCW) per damper orientation. For spring return, ensure no mechanical obstruction. Refer to 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 fail-safe actuators with spring return. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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