Thermoelectric Actuator STT-230/2 T M30x1,5
Regular price:
709,09 Kč
The promotion runs until 15 October 2026
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Description
TECH STT-230/2 T – 230 V thermoelectric actuator
TECH STT-230/2 T is a thermoelectric actuator designed for automatic opening and closing of valves installed on heating manifolds, as well as for opening and closing radiator valves. The actuators can be controlled by mounting strips or room thermostats.
Main features
- power supply: 230 V 50 Hz,
- normally closed (NC),
- valve stem position indicator,
- opening time: approximately 3.5 min,
- stroke: 3.7 mm,
- protection rating: IP45,
- maximum ambient temperature during operation: 60°C,
- continuous power: 3 W.
Application
The STT-230/2 T actuator is designed for automatic control of valves used in heating systems. It can be mounted directly on a heating manifold or radiator valve.
Valve position indicator
The actuator is equipped with a valve stem position indicator, which allows the current position of the valve stem to be determined.
Connection versions
The STT-230/2 T model is available in two versions that differ in the type of mounting nut. Both versions have the same basic operating parameters.
| Model | Connection |
|---|---|
| STT-230/2 T M28x1.5 | nut with M28x1.5 thread |
| STT-230/2 T M30x1.5 | nut with M30x1.5 thread |
Technical specifications
| Parameter | STT-230/2 T M28x1.5 | STT-230/2 T M30x1.5 |
|---|---|---|
| Type | thermoelectric actuator | thermoelectric actuator |
| Connection | nut with M28x1.5 thread | nut with M30x1.5 thread |
| Operating mode | normally closed (NC) | normally closed (NC) |
| Protection rating | IP45 | IP45 |
| Opening time | approximately 3.5 min | approximately 3.5 min |
| Stroke | 3.7 mm | 3.7 mm |
| Maximum ambient temperature | 60°C | 60°C |
| Power supply | 230 V 50 Hz | 230 V 50 Hz |
| Continuous power | 3 W | 3 W |
Compatibility with TECH systems
The STT-230/2 T actuators can work with TECH mounting strips and thermostatic valve controllers, including the L-2, L-4X Wi-Fi, L-X Wi-Fi, L-5s, L-10, L-12, ML-12 and L-8e models.
Which version to choose – M28x1.5 or M30x1.5?
The choice of version depends on the thread of the valve or manifold on which the actuator is to be installed. The M28x1.5 model has a nut with an M28x1.5 thread, while the M30x1.5 model has a nut with an M30x1.5 thread.

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