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

View all Valve Actuators

Subtotal (1 unit)*

£33.03

(exc. VAT)

£39.64

(inc. VAT)

Add to Basket
Select or type quantity
Stocked by manufacturer
  • Ready to ship from 11 May 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
1 +£33.03

*price indicative

RS Stock No.:
639-188
Mfr. Part No.:
STA121.65/00 / S55174-A211
Brand:
Siemens
Find similar products by selecting one or more attributes.
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

RoHS (since 25.04.2023), VDE 0207-24 (Halogen-Free cable variant)

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

Related links