Siemens SUA21/3 Electromotive Zone Valve Actuator 230 V
Siemens SUA21/3 Electromotive Zone Valve Actuator 230 V
The Siemens SUA21/3 is an electromotive valve actuator powered at AC 230 V with 2-position (SPST) control. With 170 N positioning force and a 2.5 mm stroke, it drives zone valves and small control valves. Running time 10 s (50 Hz).
The actuator mounts directly on the valve body; the valve series verified according to Siemens compatibility data are listed below.
Ordering information
| Model | Power supply | Control | Actuating force | Stroke | Operating time | Order code |
|---|---|---|---|---|---|---|
| SUA21/3 | AC 230 V | 2-position (SPST) | 170 N | 2.5 mm | 10 s (50 Hz) | S55176-A104 |
Technical specifications
| Specification | Value |
|---|---|
| Supply voltage | AC 230 V |
| Control type | 2-position (SPST) |
| Protection class (IP) | IP40 |
| Spring return | No |
| Stroke | 2.5 mm |
| Actuating force | 170 N |
| Operating time | 10 s (50 Hz) |
| Cable length | 0,8 m |
| Ambient temperature | 1…50 °C |
Compatible products
- Siemens VVI46 Internally Threaded 2-Way Zone Valve PN16 — VVI46.15/2, VVI46.20/2, VVI46.25/2
- Siemens VXI46 Internally Threaded 3-Way Zone Valve PN16 — VXI46.15/2, VXI46.20/2, VXI46.25/2
- Siemens VPP46 Externally Threaded Pressure-Independent Combined Balancing and Control Valve PN25 — VPP46.15L0.6, VPP46.15L0.6Q
This list is verified compatibility information based on Siemens product matching data; it is not a list of similar-product suggestions. You can make the final selection with our engineering team based on your project conditions (differential pressure, stroke, control signal).
Selection and installation notes
- The actuator's actuating force and stroke must match the close-off pressure and stroke of the valve it is fitted to.
- The supply voltage and control signal (3-position, DC 0…10 V or on/off) must match the controller output.
- Refer to the datasheet for mounting position and ambient temperature limits.
Technical documents
You can find them on the manufacturer's website by searching for the Siemens document number:
- A6V10446174 — Data sheet (English)
- A6V10732742 — Data sheet (German)
- A6V10774986 — Datasheet (English)
- A6V10854563 — Datasheet (English)
- A6V10732746 — Datasheet (English)
- A6V12563366 — Environmental product declaration (EPD) (English)
For the right model selection and wholesale or project pricing, contact the Novus Energy engineering team on our WhatsApp line.