GND126.1U/B | Siemens Industry | Actuators & Dampers
OpenAir GND Series Electric Damper Actuator, rotary, spring return, 53 lb-in (6 Nm), 24 Vac/Vdc, 2-position control, 15 sec run time, Fire/Smoke, dual auxiliary switches, bulk pack 10. Designed for UL Listed Smoke Control Dampers and for Combination Fire/Smoke Rated Dampers.
Brand:Siemens Industry
MPN:GND126.1U/B
SKU:GND126.1U/B
product specifications
Torque
53 in-lb
Supply Va
20 VA
Control Signal
Two Position
Supply Voltage (Nominal)
24 VAC
product series specifications
Power Consumption:
GGD Running: 150 VA; Holding: 10 VA
GND Running: 20VA/12W; Holding: 8VA/6W; Holding(120VAC): 9VA
Running Torque: GGD: 142 lb-in (16 Nm); GND 53: lb-in (6 Nm) (minimum)
Minimum Stall Torque: GGD: 350 lb-in (39 Nm); GND: 160 lb-in (18 Nm)
Torque Reduction at Elevated Temperature: Less than 10%
Runtime for 90° Operating with Motor at 60 Hz: 15 seconds nominal
Closing (On Power Loss) with Spring Return: 15 seconds maximum
Manual Override: Yes
Life Expectancy: 30,000 full cycles
Auxiliary Switch: 2-SPST, 24VDC, 24VAC to 250VAC, 6A resistive, 2 FLA/LRA (optional)
Shaft Diameter: GGD: 3/8" to 1" (8 to 2.56 cm); GGD221.3U: 1.05" max (2.66 cm);
GND 0.5": (1.27 cm) round
Minimum Shaft Length: 0.75" (2.0 cm)
Enclosure Rating: NEMA 1
Housing Material: Die cast aluminum alloy
Operating Temperature: 0° to 130°F (-18° to 55°C); One time 350°F (177°C) for 1/2 hour (per UL555S)
Storage Temperature: -25° to 158°F (-32° to 70°C)
Humidity: Maximum 95% RH non-condensing
Pre-Cabled Connection: 18 AWG
Dimensions: See dimensions table
Weight: GGD: 4.8 lbs (2.2 kg); GND: 2.9 lbs (1.3 kg)
Agency Certification: listed to UL873, cUL certified to Canadian standard C22.2 No. 24-93
Warranty: 2 years
product series features
- Reversible fail-safe spring return for CCW, CW rotation in the same actuator
- Patented built-in electronic fusible link
- Fast, 15-second operation
- 2 year warranty
more information & related documents
Series Description
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.
Kele Description
FS,53IN-LB ,24V,2POS, 15SEC-DRV/RET,2-SPDT,10PK
Manufacturer
Siemens Industry
GGD Installation Instructions 
