Additional references
Recommended power supply units and tables for calculating the current consumption for the 
assembly 
with SINAMICS S120 modules can be found in the "Cabinet Construction and EMC 
Booksize" Section in the 
SINAMICS S120 Booksize Power Units
 Manual.
5.4 Specifications for Protection Class and Degree of Protection
Class of protection
Safety class I in accordance with VDE 0106, Part 1 (IEC 536), i.e. a protective-conductor 
terminal is required on the mounting rail.
Protection against ingress of solid foreign bodies and water
IP20 degree of protection in accordance with IEC 529, i.e. protection against contact with 
standard probes.
Also: Protection against ingress of solid foreign bodies with diameters greater than 12.5 mm. 
No special protection against ingress of water.
Technical data
5.4 Specifications for Protection Class and Degree of Protection
SIMOTION D4x5
74 Manual, 04/2014