Data Sheet for Product
Table Of Contents
Submittal Sheet
Document No. 154-061
January 26, 2011
OpenAir™ GND Series Electronic Damper Actuators for 
UL Listed Fire/Smoke and Smoke Control Dampers 
2-Position, 15-second Run Time, 15-second Spring Return Time 
Siemens Industry, Inc. 
Operating 
Voltage 
Pack Options 
Product 
Number 
24 Vac ± 20%, 
24 Vdc + 20%, -10%, 
120 Vac ± 10%, 
230 Vac ± 10%, 
Single pack 
Ten Pack 
Two Auxiliary Switches 
Fixed 5° and 85° 
Electric Fuse Link 
Connection 
GND12x.1x  ●    ●  ●  ●  ● 
GND22x.1x ● ●  ●  ●  ● 
GND32x.1x   ●  ●  ●  ●  ● 
Technical Data 
Torque:  53 lb-in (6 Nm) (minimum) 
Stall Torque:  160 lb-in (18 Nm) (Minimum) 
Run time for 90°:  15 seconds (nominal) 
Spring Return:  15 seconds (nominal) 
Nominal angle of rotation:  95° nominal 
Operating voltage:    24 Vac ±20%/ 24Vdc+20%-10% 
Power Consumption: 
 Running:     20VA/12W  
 Holding:    8VA/6W  
Operating Voltage:    120 Vac ±10%/ 230 Vac ±10% 
Power Consumption: 
 Running:  20 VA 
Holding:   9 VA  
Damper shaft size:  1/2-inch (13 mm) round 
Damper shaft length, minimum:  1.4-inch (36 mm) min. length 
Agency listings:    UL873 
    cUL C22.2 No. 24-93, 
AS/NZS 2064 1/2:1997 
  CE conformity 
  Australian Electromagnetic 
Compatibility (EMC) per 
AS/NZS 4251.1/2:1999 
(C-tick) 
Ambient temperature, operating:  0°F to 140°F (-18°C to 60°C), 
one time 350°F (177°C) 
Ambient temperature, storage/transport:  -40°F to 158°F (-40°C to 70°C) 
Ambient humidity (non-condensing):  Maximum 95% rh non-condensing 
Teflon
®
 cable:  400°F (200°C) 
Enclosure: NEMA 1 
Housing material:  Die cast aluminum alloy 
Pre-cabled connection:  18 AWG, 3 ft 
    3/8-in flexible conduit connector 
Dimensions (Approximate):   9-in. H × 3-1/4-in. W × 3-in. D 
Weight:  ≈4 lb 
Country of Origin  USA 
Description 
The OpenAir direct-coupled, 2-position, 
spring return electronic damper actuators are 
UL listed for smoke control dampers or for 
combination fire/smoke rated dampers. 
Actuators are designed to operate reliably in 
smoke control systems requiring 
Underwriter’s Laboratories, Inc. UL555/555S 
rating when tested as an assembly with the 
damper and will meet requirements of UBC 
for 15 second opening and closing at 350°F 
(177°C). 
Features 
•  Optional built-in auxiliary switches: Fixed 
switch points at 5° and 85° rotation. 
•  Optional built-in Electronic Fusible Link 
(EFL) capability with three temperature 
ratings; 165°F, 250°F, 350°F 
• Reversible fail-safe spring return 
•  All metal housing 
• Precabled Teflon
®
 insulated lead wires 
•  Fifteen second operation at rated torque, 
temperature, and voltage 
Fixed Dual End Switches   
  24 Vdc, 24 Vac to 250 Vac 
 6A resistive 
 2FLA/12 LRA 
 SPST 
  Fixed 5° and 85° 
Electronic Fuse Link (24 Vac) 
ASK79.165 165°F (74°C) 
ASK79.212 212°F (100°F) 
ASK79.250 250°F (121°C) 
ASK79.350 350°F (177°C) 


