User Manual

7-11

Siemens Switzerland Ltd www.siemens.com/gamma 2019

Building Technologies Division

Heating, ventilation and air-conditioning – room temperature control

Technical specications

Electrothermal valve actuators without KNX

Type STA23 STA63 STA73 STP23 STP63 STP73 SSA31 SSA61 SSA81

Enclosure data

Dimensions

• Width/Ø [mm] 44 44 44 44 44 44 48 48 48

• Max. height [mm] 74 74 74 74 74 74 77 77 77

• Min. height [mm] 69 69 69 69 9 69 77 77 77

Output

• 230 V AC n n n

• 24 V AC n n n n n n

• 24 V DC n n n

Control signal Two-step 0 ... 10 V DC Two-step Two-step 0 ... 10 V DC Two-step Three-step 0 ... 10 V Three-step

Valve position in de-energized state

NC NC NC NO NO NO NC NC NC

Fail Safe Function Y Y Y Y Y Y N N N

Max. lift [mm] 4.5 4.5 4.5 4.5 4.5 4.5 5.5 5.5 5.5

Max. positioning force [mm/N] 100 100 100 100 100 100 100 100 100

Max. open/close time [sec.] 210 270 270 210 270 270 330 75 330

Length of connecting lead [m] 1 2 1 1 2 1 1.5 1.5 1.5

Ambient temperature for operation [°C] +5 ... +50 +5 ... +50 +5 ... +50 +5 ... +50 +5 ... +50 +5 ... +50 +1 ... +50 +1 ... +50 +1 ... +50

Power Consumption [W/VA] 2.5 W 2.5 W 2.5 W 2.5 W 2.5 W 2.5 W 6 VA 2.5 VA 0.8 VA

Mounting 360°, also upside down 180°, not upside down

Degree of protection IP54 IP54 IP54 IP54 IP54 IP54 IP40 IP40 IP40

Closed (NC), open (NO).

For further information regarding accessories (adapter, connector cable, ...) use the HIT-portal: www.siemens.com/hit

16_VS_2017_Gamma HQ_EN_Chapter_7_V1.indd 11 19.08.2018 15:07:23