Siemens Building Technology GCA136.1P Actuator

The Siemens GCA136.1P is a high-torque, OpenAir electronic damper actuator engineered for precise floating control and three-position control in demanding HVACR applications. Designed for building automation systems requiring a reliable fail-safe spring return, this 24V AC/DC unit provides a robust 142 lb-in (16 Nm) of torque (with some specifications rated up to 160 lb-in depending on conditions). Its all-metal die-cast aluminum housing ensures durability in mechanical rooms and industrial environments, while the plenum-rated cable allows for direct installation in air handling spaces without additional conduit.

This model features dual independently adjustable auxiliary switches, providing technicians with versatile feedback loops and the ability to interlock with fans or other equipment at specific stroke points. The brushless DC motor technology incorporates stall protection to prevent burnout, while the self-centering shaft coupling simplifies mounting on 1-inch diameter shafts. With a 90-second runtime and a fast 15-second spring return fail-safe, the Siemens GCA136.1P is the industry standard for return air, exhaust, and face-and-bypass damper systems that cannot afford downtime during power loss.

• Fail-Safe Protection: Reliable mechanical spring return ensures dampers reach a protective position in under 20 seconds during power interruptions.
• Precise Feedback: Integrated dual auxiliary switches (adjustable from 0° to 90°) facilitate complex sequence-of-operation requirements.
• Easy Installation: The patented self-centering shaft coupling eliminates the need for expensive linkages and ensures concentric alignment.
• Durable Construction: NEMA 2 / IP54 rated metal housing maintains performance in variable humidity and high-traffic mechanical areas.
• Extended Lifespan: Tested for over 60,000 full strokes and 1.5 million repositions to reduce maintenance calls.

What is the difference between the GCA136.1P and GCA131.1P?
The GCA136.1P includes dual auxiliary switches for position feedback and interlocking, whereas the GCA131.1P is the base model without integrated switches.

Can this actuator be used in return air plenums?
Yes, the GCA136.1P is equipped with an 18 AWG plenum-rated cable, making it suitable for HVAC plenum installations according to standard building codes.

How do I override the actuator manually?
This unit features a manual override mechanism that allows you to position the damper during commissioning or power outages using the provided hex key.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.