User Manual
  3SU10 device range 
  4.2 Overview 
SIRIUS ACT 3SU1 pushbuttons and signaling devices 
System Manual, 02/2015, A5E03457306020A/RS-AB/002 
65 
Typical diagram 
Each pressure plate can be individually removed and reinstalled. A pressure plate always 
actuates the contact modules mounted on the holder at position 3/6 (center position), and 
the corresponding outer contact modules at position 1/4 or 2/5.  
If a pressure plate is not used, only the corresponding outer contact at position 1/4 or 2/5 is 
actuated. 
Note about installation of LED modules: The pressure plates must be removed before the 
LED module is installed. 
For further information refer to Chapter "Installation (Page 89)" 
The table shows the contact module / LED module actuation with differently mounted 
pressure plates using the example of a selector switch with 3 switch positions and equipped 
contact modules and LED modules. 
Switch position left 
Switch position right 
Pressure plate 
① 
Contact module 
Position 1/4 
Contact / LED 
module 
Position 3/6 
Contact module 
Position 2/5 
Contact module 
Position 1/4 
Contact / LED 
module 
Position 3/6 
Contact module 
Position 2/5 
2 pressure 
plates mounted 
1 pressure 
plate mounted 
on the right 
1 pressure 
plate mounted 
on the left 
No pressure 
plate mounted 










