Description
The Belimo SM230A-S Rotary Actuator is a high-performance HVAC damper actuator designed for open/close and 3-point control applications in commercial ventilation systems. Operating on AC 100...240 V power, the actuator delivers 20 Nm torque with selectable CW/CCW rotation and a 95° operating range for precise damper positioning. Its IP54 and NEMA 2 protection ratings support reliable operation in demanding indoor HVAC environments.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Belimo |
| Category |
HVAC Controls |
| Part Number |
SM230A-S |
| Subcategory |
Rotary Actuators |
| Product Type |
Rotary Actuator |
| Voltage Rating |
AC 100...240 V |
| Frequency |
50/60 Hz |
| Torque Output |
20 Nm |
| Control Type |
Open/Close, 3-Point |
| Power Consumption Running |
2.5 W |
| Power Consumption Holding |
0.6 W |
| Power Consumption for Wire Sizing |
6 VA |
| Auxiliary Switches |
1x SPDT |
| Connection Type |
Cable 1 m, 3x 0.75 mm² |
| Direction of Motion |
Selectable CW/CCW |
| Manual Override |
Push-Button, Lockable |
| Angle of Rotation |
95° |
| Running Time |
150 Seconds / 90° |
| Mechanical Interface |
Universal Shaft Clamp 10...20 mm |
| Protection Category |
IP54 |
| NEMA Rating |
NEMA 2 |
| Enclosure Type |
UL Enclosure Type 2 |
| Ambient Temperature |
-30...50°C (-22...122°F) |
| Application |
HVAC Dampers |
| Weight |
5 lb |
Information About SM230A-S
The SM230A-S is a rotary actuator manufactured by Belimo for airflow control and damper automation in commercial HVAC systems. Designed for open/close and 3-point control operation, the actuator supports parallel operation and includes a selectable direction switch for CW or CCW motor rotation. The actuator incorporates a manual override push-button that can be locked during servicing or adjustment procedures. Built with IP54 environmental protection, a universal reversible shaft clamp, and integrated SPDT auxiliary switch functionality, the actuator is suitable for air handling units, dampers, and building automation installations.
Key Features:
- 20 Nm Torque Output: Provides dependable damper positioning for HVAC airflow control.
- AC 100...240 V Operation: Compatible with a wide range of commercial power systems.
- Open/Close and 3-Point Control: Supports flexible HVAC automation applications.
- Selectable CW/CCW Rotation: Allows configurable actuator movement direction.
- Manual Override Push-Button: Enables manual positioning and locking capability.
- 95° Rotation Angle: Supports accurate airflow and damper modulation.
- IP54 and NEMA 2 Protection: Protects against dust and moisture exposure.
- Integrated Auxiliary Switch: Includes 1x SPDT switch for monitoring and control integration.
The SM230A-S delivers the reliability and precision required for commercial HVAC damper and airflow control applications.
