Technical Data
4.4 Information on insulation tests, safety class, and degree of protection
D4x5
60 Manual, 05/2009
4.4 Information on insulation tests, safety class, and degree of protection
Test voltages
During the routine test, the insulation resistance is tested at the following test voltage in
accordance with IEC 1131 Part 2:
Table 4- 14 Test voltages
Circuits with rated voltage Ue relative to other circuits or
ground
Test voltage
0 V < Ue ≤ 50 V 500 VDC
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
Degree of protection IP 20 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.
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