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Technical Instructions
Document Number 155-314P25
June 1, 2023
Warning/Caution Notations
Specifications
Power requirements
Functional operation
Agency certification
Ambient conditions
Physical characteristics
Page 2
WARNING:
CAUTION:
Operating voltage
Frequency
Power supply
Power consumption
Running time
Nominal stroke
Nominal force
Stroke/signal relationship
UL
cUL
Ambient temperature
Operation
Transport and storage
Ambient humidity
Media temperature
Wiring Connection
Weight
Dimensions
MT Series SSC81U Electronic Valve Actuator, 24 Vac Floating Control
Personal injury or loss of life may occur if you do not perform
a procedure as specified.
Equipment damage may occur if you do not follow a
procedure as specified.
24 Vac 20%
50/60 Hz 2 Hz
Earth ground isolating, Class 2,
24 Vac transformer
NOTE:
0.8 VA
125 s 2% at 60 Hz
7/32-inch (5.5 mm)
67 lb (300N)
Linear
UL873 Listed
Certified to CSA
C22.2 No. 24-93
41°F to 122°F (5°C to 50°C)
-13°F to 158°F (-25°C to +70°C)
0 to 90% rh (non-condensing)
35°F to 230°F (2°C to 110°C)
Plenum cable or 3/8-inch flex conduit
1.1 lb (0.5 kg)
See Figure 6.
Do not power more than
10 actuators with one
transformer.
Siemens Industry, Inc.
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