OpenAir™
Document No. 155-173P25
EA GCA-1
May 19, 2014
GCA Series Spring Return 160 lb-in
Electronic Damper Actuators
Siemens Industry, Inc.
Description
The OpenAir 24 Vac/dc spring return 160 lb-in (18 Nm) electronic actuator is designed for
digital or analog control of building HVAC dampers.
Features
• Brushless DC motor technology with stall protection
• Bi-directional fail-safe spring return
• Patented self-centering shaft coupling
• Manual override
• 160 lb-in (18 Nm) torque
• 5° preload as shipped from factory
• Offset and span adjustment models available
• Models with independently adjustable dual auxiliary switches available
• UL and cUL listed;
certified
Application
These actuators are designed for use in constant or variable air volume installations for the
control of return air, mixed air, exhaust, and face and bypass dampers requiring up to
160 lb-in (18 Nm) torque. They are designed for applications that require the damper to
return to a fail-safe position when there is a power failure.
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