Description
The Belimo SY1-230-3-T is a rotary actuator designed to operate compatible butterfly valves in industrial and building-service installations. It converts electrical control signals into mechanical rotation, allowing a connected valve to move between open and closed positions.
With a nominal torque of 35 Nm and a 230V AC supply, this model supports open/close and 3-point control. Its integrated auxiliary switches provide additional switching signals for compatible control and monitoring circuits.
Key Features of the Belimo SY1-230-3-T
| Specification | Details |
|---|---|
| Manufacturer | Belimo |
| Model | SY1-230-3-T |
| Product Type | Rotary Actuator for Butterfly Valves |
| Nominal Supply Voltage | AC 230V |
| Voltage Range | AC 198–253V |
| Nominal Torque | 35 Nm |
| Control | Open/Close and 3-Point |
| Rotation Angle | 90° |
| Motor Running Time | 14 Seconds per 90°, According to the Official Datasheet |
| Auxiliary Switches | Two Integrated SPDT Switches |
| Ingress Protection | IP67 |
| Housing Material | Die-Cast Aluminium |
| Ambient Operating Temperature | −20°C to +65°C |
| Manual Override | Temporary Operation Using an Open-End Wrench |
These specifications are based on Belimo’s official technical datasheet. Confirm the documentation for the exact unit before installation.
How the Rotary Actuator Works
The actuator receives electrical control signals and drives the connected butterfly valve through its specified rotation angle. This allows a control system or operator to manage valve positioning without relying solely on manual operation.
The SY1-230-3-T supports open/close and 3-point control. Its auxiliary switches can provide position-related switching signals when connected according to the manufacturer’s wiring instructions.
Applications
The Belimo SY1-230-3-T may be selected for installations requiring compatible butterfly valve actuation, including:
– Building services and HVAC valve assemblies
– Heating and water-system valve control
– Industrial fluid-control installations
– Automated valve operation in compatible equipment
Compatibility note: Confirm the butterfly valve’s mounting interface, required torque, operating conditions, and permitted fluid temperatures before choosing the actuator. Belimo specifies an F05 connection flange for this model.
Why Verify the Exact Model?
Actuators in the same product family can have different torque ratings, supply voltages, control functions, and mounting requirements. Check the full model code before ordering a replacement or specifying an actuator for a new project.
The SY1-230-3-T is a 230V AC, 35 Nm model. It should not be confused with the 24V version or other SY-series actuators.
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