Description 
  3.5 Design 
SIMATIC IPC427C 
Operating Instructions, 04/2009, A5E02414743-01 
19 
3.5.3  Operator controls 
On/Off switch 
 
CAUTION 
 
The On/Off switch does not disconnect the device from the supply voltage. 
 
 
 
Position of on/off switch  Pos  Description 
 
 
 
 
①  The on/off switch turns off the output voltages of 
the power supply but not disconnect from the 
supply system. 
The delivery condition is: Power switch turned 
off.