Data Sheet for Product
Technical Instructions  OpenAir® Non-Spring Return Rotary Electric Damper Actuator 
Document Number 155-187P25  24 Vac – Modulating Control 
May 13, 2021 
Page 4  Siemens Industry, Inc. 
Accessories 
NOTE:  The auxiliary switches cannot be added in the field. Order the product 
number that includes this option. See Table 1. 
Figure 2. Conduit Adapter. 
ASK76.1U: Provides connection between 
the actuator and conduit. 
NOTE:  GDE161.1T Terminal 
Strip and GDE161.1N 
Post Header AMP are 
not compatible with the 
ASK76.1U. 
Figure 3. Rotary to Linear. 
ASK71.5: Allows a direct-coupled 
actuator to provide an auxiliary 
linear drive. 
Figure 4. Rotary to Linear with Bracket. 
ASK71.6: Allows economical 
mounting of an OpenAir actuator 
to a variety of surfaces. 
Should be used in applications 
where the actuator can be rigid-
surface mounted and a linear 
stroke output is needed. 
Figure 5. Tandem Mount Bracket. 
ASK73.1: Bracket provides 
extended anti-rotation pin allowing 
two OpenAir actuators to directly 
drive a single damper shaft. For 
use with two- and three-position 
actuators. 
Figure 6. Shaft Insert. 
ASK78.3U: Shaft inserts for use 
with 3/8-inch (8 to 10 mm) 
diameter shafts. (10/pk). 
Included in box with GDE/GLB 
Series. 
NOTE:  Factory-installed 1/2-
inch guide must be 
removed prior to 
installation. 
Figure 7. 1/2-inch Shaft Guide. 
985-101P25: Shaft guide, 1/2-inch (25/pk). 
Factory-installed with GDE/GLB Series. 










