Data Sheet for Product

Technical Instructions OpenAir™ GCA Series Spring Return 160 lb-in Electronic Damper Actuator
Document No. 155-173P25
June 22, 2015
Page 4 Siemens Industry, Inc.
Specifications,
Continued
Mounting
Nominal angle of rotation 90°
Maximum angular rotation 95°
Shaft size 3/8-inch to 1-inch
(8 mm to 25.6 mm) diameter
1/4-inch to 5/8-inch
(6 to 18 mm) square
Minimum shaft length 3/4-inch (20 mm)
Auxiliary features
Control signal adjustment
Offset (start point) 0 Vdc to 5 Vdc
Factory setting 0 Vdc
Span 2 Vdc to 30 Vdc
Dual auxiliary switches
AC rating (Standard cable) 24 Vac to 250 Vac
AC 6A resistive
AC 2A FLA, 12 LRA
AC rating (Plenum cable) 24 Vac
AC 4A resistive
AC 2A, FLA, 12 LRA
DC rating (Standard/Plenum cable) 12 Vdc to 30 Vdc
DC 2A
Switch Range
Switch A 0 to 90° with 5° intervals
Recommended range usage 0 to 45°
Factory setting 5°
Switch B 0 to 90° with 5° intervals
Recommended range usage 45° to 90°
Factory setting 85°
Switching hysteresis 2°
WARNING:
Apply only AC-line voltage from the same phase or only UL-Class 2 voltage to
the switching outputs of both auxiliary switches A and B. Mixed operation is not
permissible.
NOTE: With plenum cables, only UL-Class 2 voltage is permitted.
Housing
Enclosure NEMA 2, IP54 per EN 60 529
in vertical to horizontal 90°
See Figure 17.
NEMA 3R rated when installed with
ASK75.1U Weather Shield in the
vertical position. See Figure 18.
See Accessories, Figure 9.
Material Die-cast aluminum alloy
Gear lubrication Silicone-free