MPN

Siemens Electric 2 Port Valve Actuator -, 24V Supply Voltage

RS Stock No.:: 639-189
Mfr. Part No.:: STA121.65H20 / S55174-A208
Brand:: Siemens

Siemens Electric 2 Port Valve Actuator -, 24V Supply Voltage

Subtotal (1 unit)*

$191.37

(exc. GST)

$220.08

(inc. GST)

Spend over $80.00 ex GST for FREE delivery

In Stock

2 unit(s) ready to ship from another location

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit
1 +	$191.37

*price indicative

RS Stock No.:: 639-189
Mfr. Part No.:: STA121.65H20 / S55174-A208
Brand:: Siemens

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Siemens
	Number of Ports Supported	2
	Product Type	Valve Actuator
	Maximum Closing Time	270s
	Supply Voltage	24V
	Actuator Type	Electric
	Standards/Approvals	VDE 0207-24 (Halogen-Free cable variant), RoHS (since 25.04.2023)

	Select all
	Brand Siemens
	Number of Ports Supported 2
	Product Type Valve Actuator
	Maximum Closing Time 270s
	Supply Voltage 24V
	Actuator Type Electric
	Standards/Approvals VDE 0207-24 (Halogen-Free cable variant), RoHS (since 25.04.2023)

Datasheet - STA121.65H20 / S55174-A208

RoHS Status: Exempt

COO (Country of Origin):: PL

The Siemens Thermal actuator is built for reliable functionality in heating, ventilation, and cooling systems powered by 24V AC/DC. It operates in a NC configuration, ensuring responsive control in temperature-sensitive environments, its 6.5 mm stroke ensures precise valve actuation. With compact construction, it's well-suited for installations with limited space. Its durable design supports consistent performance across varied system applications.

IP54 housing protective class

Robust construction and quiet operation

RoHS compliant

CE and UKCA compliant