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Belimo Part Number: SY1-110
The SY actuators are NEMA 4, 4x rated and designed to meet the needs of HVAC and Commercial applications. Offered on the HSU and HS butterfly valve series, these actuators are available for on/off and modulating applications. Depending on the application, they are available in 24 VAC, 120 VAC and 230 VAC.
Technical Attributes
Torque310 in-lb 
Control InputOn/Off 
Input Impedance1000  
Position FeedbackNo Feedback 
Running Time (motor)12 seconds 
Running Time (fail-safe)-- 
Auxiliary Switch(2) SPDT, 10A 250 VAC 
Power Supply120 v 50/60 Hz 
Power Consumption0.5 A 
Transformer Sizing-- 
Electrical Connection1/2" conduit connector, screw terminals 
Overload Protectionelectronic thoughout 0 to 95° rotation 
Shaft Diameter-- 
Angle of Rotationmechanically limited to 95° 
Direction of Rotation (motor)Reversible 
Direction of Rotation (fail-safe)-- 
Position Indicationtop mounted domed indicator 
Manual OverrideYes 
Humidity100% condensing 
Ambient Temperature-22°F to 150°F [-30°C to 65°C] 
Ambient Temperature (safety)-- 
Storage Temperature-40°F to 176°F [-40°C to 80°C] 
Noise Levelmax 35 db (A) 
Housing Materialdie cast aluminum alloy 
HousingIP67, NEMA 4X 
Agency ListingISO,CE,cCSAus 
ServicingMaintenance free 
Quality StandardsISO 9001 
Weight4.9 lbs (2.00 kg) 
Item Number: SY1-110
Manufacturer: Belimo
Manufacturer Part No: SY1-110

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