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Ingress Protection Rating


IP ratings

The international protection system for enclosures (IP) is particularly relevant for hazardous areas. A non-sparking electrical apparatus, for example, will have an IP64 rating. The first digit indicates the degree of protection against touching live parts and the ingress of dust. The second digit indicates the degree of protection against the ingress of liquid. Table 3 lists all the IP ratings.


IP ratings table



DIGIT
DEGREE OF PROTECTION
AGAINST SOLIDS
SECOND
DIGIT
DEGREE OF PROTECTION
AGAINST LIQUIDS
0
Non-protected
0
No special protection
1
Protected against solids > 50 mm
1
Protected against dripping water
2
Protected against solids > 12 mm
2
Protected against dripping water at 15° angle
3
Protected against solids > 2,5 mm
3
Protected against spraying water
4
Protected against solids > 1 mm
4
Protected against splashing water
5
Dust-protected
5
Protected against water-jets
6
Dust-tight
6
Protected against heavy seas
 
 
7
Protected against effect of immersion
 
 
8
Protected against immersion