Siemens GCA121.1U Damper Actuator, rotary, spring return, 160 lb-in (18 Nm), 24 Vac/dc, 2-position control, 90 sec run time.
Torque: 160 lb-in (18 Nm)
Failure Mode: Spring Return
Angular rotation: 90°
Control Signal: 2-Position
Positioning time: Open:90 s, Close:15 s
Position feedback: No
Operating voltage: 24V AC/DC
Power consumption: Running: 7 VA / 5 W, Holding: 5 VA / 3 W
Ambient humidity, operation: 95 % r.h.
Auxiliary Switch: None
Cable length: 3 ft
Dimensions (W x H x D): 4.75 x 11.81 x 2.88 in
Material, housing: Die-cast aluminum alloy enclosure
Degree of protection: NEMA 2 / IP54
David Marks –
One of my fav damper actuator. Reliable, high performance and fail-safe. Just a fantastic product all around.