Configuring   
4.3 Component dimensions 
  S7-300, CPU 31xC and CPU 31x: Installation 
4-4  Operating Instructions, Edition 08/2004, A5E00105492-05 
4.3  Component dimensions 
Length of the mounting rails 
Table 4-1  Mounting rails - Overview 
Mounting rail length  Usable length for modules  Order number 
 160 mm   120 mm  6ES7 390-1AB60-0AA0 
 482.6 mm   450 mm  6ES7 390-1AE80-0AA0 
 530 mm   480 mm  6ES7 390-1AF30-0AA0 
 830 mm   780 mm  6ES7 390-1AJ30-0AA0 
 2000 mm  cut to length as required  6ES7 390-1BC00-0AA0 
In contrast to other rails, the 2 m mounting rail is not equipped with any fixing holes. These 
must be drilled, allowing optimal adaptation of the 2 m rail to your application. 
Dimensions of modules 
Table 4-2  Module width 
Module  Width 
Power supply module PS 307, 2 A   50 mm 
Power supply module PS 307, 5 A   80 mm 
Power supply module PS 307, 10 A   200 mm 
CPU  For information on assembly dimensions, 
refer to the Technical Data in 
CPU 31xC and 
CPU 31x Manual, Technical Data
. 
Analog I/O modules   40 mm 
Digital I/O modules   40 mm 
Simulator module SM 374   40 mm 
Interface modules IM 360 and IM 365   40 mm 
Interface module IM 361   80 mm 
•  Module height: 125 mm 
•  Module height with shielding contact element: 185 mm 
•  Maximum assembly depth: 130 mm 
•  Maximum assembly depth of a CPU with an inserted DP connector with angled cable 
feed: 140 mm 
•  Maximum assembly depth with open front panel (CPU): 180 mm 
Dimensions of other modules such as CPs, FMs etc. are found in the relevant manuals.