Siemens STA121.65L20, S55174-A205
Thermal Actuator AC/DC24V NC 6.5mm 2m on/off
for radiator valves, small valves and Combi valves
Electrothermal actuators, stem extended in a deenergized state (NC) for 2-position and quasi-proportional control of heating systems, chilled ceilings and terminal units. With position indication.
Suited for valves:
- Radiator valves VDN../VEN../VUN../VPD../VPE..
- Small valves VD1..CLC and V..I46..
- Combi valves VPP46.., VPI46..
- Valves of other manufacturers
Additional info
For fitting to valve: Cap nut M30 x 1.5
HS Code: 84128080
Coo: Germany