Siemens Electric Valve Actuator -, 24 V ac Supply Voltage

RS Stock No.:: 287-8771
Mfr. Part No.:: SSA81.1 / BPZ:SSA81.1
Brand:: Siemens

Siemens Electric Valve Actuator -, 24 V ac Supply Voltage

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£147.83

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£177.40

(inc. VAT)

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RS Stock No.:: 287-8771
Mfr. Part No.:: SSA81.1 / BPZ:SSA81.1
Brand:: Siemens

Specifications

Technical Reference

Legislation and Compliance

Product Details

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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

Datasheet - SSA81.1

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

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

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.