Siemens Electric Valve Actuator -, 24 V ac Supply Voltage
- RS Stock No.:
- 287-8771
- Mfr. Part No.:
- SSA81.1 / BPZ:SSA81.1
- Brand:
- Siemens
Subtotal (1 unit)*
£147.83
(exc. VAT)
£177.40
(inc. VAT)
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In Stock
- Plus 1 unit(s) shipping from 20 October 2025
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Units | Per unit |
|---|---|
| 1 + | £147.83 |
*price indicative
- RS Stock No.:
- 287-8771
- Mfr. Part No.:
- SSA81.1 / BPZ:SSA81.1
- Brand:
- Siemens
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Siemens | |
| Supply Voltage | 24 V ac | |
| Actuator Type | Electric | |
Select all | ||
|---|---|---|
Brand Siemens | ||
Supply Voltage 24 V ac | ||
Actuator Type Electric | ||
RoHS Status: Not Applicable
- COO (Country of Origin):
- CN
Siemens Valve Actuator, 24V AC Supply Voltage, Electric Actuator Type - SSA81.1
This valve actuator is an electric actuator designed for precise control in various heating and cooling systems. With a supply voltage of 24V AC, it provides efficient performance for radiator valves, MiniCombiValves, and small valves. The compact design allows for direct mounting to the valve’s coupling nut without the need for additional tools, ensuring easy installation. Weighing 0.4 kg, it combines a robust structure with reliable functionality, making it suitable for industrial applications.
Features & Benefits
• Automatic identification of valve stroke optimises performance
• Direct mounting with coupling nut simplifies installation
• Manual override allows for emergency operation
• Integrated auxiliary switch enhances control flexibility
• Halogen-free cables support environmentally friendly installations
• Voltage tolerance up to ±20% ensures stable operation
• Direct mounting with coupling nut simplifies installation
• Manual override allows for emergency operation
• Integrated auxiliary switch enhances control flexibility
• Halogen-free cables support environmentally friendly installations
• Voltage tolerance up to ±20% ensures stable operation
Applications
• Used for radiator valves with M30 x 1.5 threaded fitting
• Applicable for Combi valves and MiniCombiValves
• Suitable for small valves in HVAC systems
• Ideal for modulating or 3-position control in heating systems
• Compatible with third-party valves using AV-type adaptors
• Applicable for Combi valves and MiniCombiValves
• Suitable for small valves in HVAC systems
• Ideal for modulating or 3-position control in heating systems
• Compatible with third-party valves using AV-type adaptors
How does this actuator maintain valve position without power?
It features a mechanism that keeps the valve in its current position when there is no voltage applied, ensuring reliable operation even during power outages.
What is the maximum force the actuator can exert?
The actuator can exert a nominal force of 100 N, making it effective for a variety of valve types.
How does the automatic identification of valve stroke work?
This function helps the actuator calibrate itself to the specific valve stroke, allowing for precise control and ensuring compatibility across a
Can multiple actuators be connected to a single control signal?
Yes, it allows the parallel connection of multiple actuators, up to a maximum of 24 for this model, facilitating large system integration.
What types of valves can be used with this actuator?
The actuator is compatible with a variety of radiator and small valves, including specific models like VDN, VEN, VUN, and several Combi valve types, using appropriate AV-type adaptors.