Belimo SY4-120MFT

Configurable Valve Actuator, Non fail-safe, AC 120 V, 2...10 V, 2 x SPDT, MFT/programmable

Belimo’s SY series electric actuators have been designed to mate with our HD(U), Grooved and SHP… series butterfly valves and other quarter turn valve applications.

The patented gear drive mechanism provides for efficient, smooth operation while allowing easy manual override at any time. Drawing upon years of experience in the actuation industry, we have incorporated the most desirable features into the SY product range.

All units have NEMA 4X ratings, easily visible position indicators, international standard ISO5211 mounting systems, internal thermal motor overload protection, heater, dual auxiliary Form C switches, and easily accessible wiring termination points. Wiring diagrams, included in all printed documentation, are also affixed to the outside of the housing on the permanently attached product label.

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. The SY series actuators are fractional horsepower devices, and utilize half-wave power supplies. Observe wire sizing and transformer sizing requirements

• Hand Wheel Override
• Electrical connection: ½” conduit connector, screw terminals
• Motor protection: F Class
• Gear train: high alloy steel gear sets, self locking
• Operating range: 2-10 VDC, 4-20mA, 0-10 VDC
• Sensitivity: 0.4mA/200mV
• Reversal hysteresis: 1.0mA/500mV
• Feedback: 2-10 VDC
• Angle of rotation: 90°
• Direction of rotation: reversible
• Position indication: top mounted domed indicator
• Internal humidity control: resistive heating element
• Auxiliary switches: (2) SPDT, 5A 250 VAC factory set for 5° and 85° change of state
• Ambient temperature: -22°F to +150°F [-30°C to +65°C]
• Humidity range: up to 95%
• Housing type: IP67, NEMA 4X
• Housing material: die cast aluminum alloy
• Agency listings: ISO, CE, cCSAus

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