Siemens Industry, Inc.
Document No. 155-176P25
EA GBB/GIB-1
OpenAir™ GBB/GIB Series
Electronic Damper Actuators
Non-Spring Return, 24 Vac, Modulating Control
Description
The OpenAir, non-spring return (NSR), 24 Vac, rotary, direct-coupled, electric actuator
is designed for modulating control of building HVAC dampers.
Features
• Built-in feedback on modulating units
• Unique self-centering shaft coupling
• All metal housing
• Two torque ranges available
• Manual override
• Offset and span adjustment models available
• Independently adjustable dual auxiliary switches available
• UL, cUL and CE listed
Product Numbers Table 1.
24 Vac Operating Voltage
Torque
Input
Signal Cabling Standard
Span/Off
Adjustable
Dual Auxiliary
Switches and
Span/Offset
Adjustable
Switches only
(25 Nm)
0 to 10 Vdc
(35 Nm)
0 to 10 Vdc
Application
These actuators are used in constant or variable air volume installations for the control of supply
return air, mixed air, exhaust, rooftop units, and face and bypass dampers requiring up to 221 lb-in
(25 Nm) torque or 310 lb-in (35 Nm) torque.