Siemens SINAMICS S120 Equipment Manual page 47

Installing the CU320 on a mounting surface using spacer elements
To provide the correct mounting depth for a booksize line-up with internal air cooling, you
can use spacer elements.
Figure 2-9 Installing the CU320 on a mounting surface using spacer elements
Equipment Manual Control Units and Additional System Components
Equipment Manual, (GH1), 12/2004 Edition, 6SL3097-2AH00-0BP1
Control Units
2.2 Control Unit 320 (CU320)
2-19