International Protection Marking in accordance with DIN EN IEC 60529

The IP degree of protection determines the degree of protection of the material against penetration of solid bodies (1st digit), liquids (2nd digit) or an additional letter.

International Protection Marking

First characteristic numeralDescription
0Non-protected
1Protected against solid foreign objects of 50 mm diameter or greater
2Protected against solid foreign objects of 12.5 mm diameter or greater
3Protected against solid foreign objects of 2.5 mm diameter or greater
4Protected against solid foreign objects of 1 mm diameter or greater
5Dust-protected
6Dust-tight
Additional letterDescription
AProtected against access with the back of the end
BProtected against access with a finger
CProtected against access with a tool
DProtected against access with a wire
Second characteristic numeralDescription
0Non-protected
1Protected against vertically falling water drops
2Protected against vertically falling water drops when enclosure tilted up to 15°
3Protected against spraying water
4Protected against splashing water
5Protected against water jets
6Protected against powerful water jets
6k(1)Protected against powerful water jets with increased pressure
7Protected against the effects of temporary immersion in water (≤1m)
8Protected against the effects of continuous immersion in water (>1m)
9(1)Protected against the effects of powerful water jets at high temperature

(1) : All test with letter K are defined by ISO 20653 (replacing DIN 40050-9)

Supplementary letterDescription
HHigh-voltage equipment
MDevice moving during water test
SDevice standing still during water test
WWeather conditions