Siemens Building Technology GCA131.1U Spring Return Damper Actuator 160 lb-in 24VAC/DC Floating Control

The Siemens Building Technology GCA131.1U is an OpenAir GCA Series electric damper actuator designed for modulating and floating control of HVAC dampers in commercial building applications. This rotary actuator features spring return fail-safe operation with 160 lb-in (18 Nm) torque output and 90-second run time for reliable damper positioning.

Key Features:

• Spring return operation for fail-safe positioning during power loss
• 160 lb-in (18 Nm) torque output for demanding applications
• 24 VAC/DC dual voltage operation with 7 VA power consumption
• Floating control with bi-directional rotation (Y1/Y2 control inputs)
• Brushless DC motor technology with built-in stall protection
• 90-second full stroke run time across 90-degree rotation
• Patented self-centering shaft coupling for quick installation
• Manual override capability for maintenance and testing
• All-metal housing with NEMA 2 (IP54) rating
• Mechanical range adjustment at 5-degree intervals
• Easily visible position indicator
• Pre-wired with 3-foot standard cable
• Operating range: -25°F to 130°F (-32°C to 55°C)
• UL60730 and cUL C22.2 No. 24-93 certified

The GCA131.1U is ideal for controlling dampers in air handling units, variable air volume systems, and other HVAC applications requiring reliable fail-safe operation. Its compact design and standardized mounting make it compatible with damper shaft sizes from 3/8 to 1 inch.