Direct Coupled Actuators Non-Spring Return
The Siemens GDE, GLB, GEB, GBB, GIB, and GAP Series direct coupled, non-spring return actuators provide actuation for a complete range of HVAC non-spring return damper applications, from terminal units to inlet vane dampers and more. They range in torque from 44 in-lb (5 Nm), handling approximately 11 sq ft of damper area, to 310 in-lb (35 Nm), handling approximately 77 sq ft of damper area. These actuators are available in all standard control signal types and offer a wide variety of options and accessories.
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Fire and Smoke Damper Actuators
The Siemens GND, GGD Series fire/smoke damper actuators are spring return, 2-position, 15 second actuators designed to operate UL Listed smoke control dampers and combination fire/smoke dampers. The GND Series has 53 in-lb (6 Nm) of torque and the more powerful GGD Series has 142 in-lb (16 Nm) of torque. These actuators have patented built-in electronic fusible links; there is no need to buy/install separate parts to perform that function.
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