Insulation class (IP codes)
The insulation classes are used to indicate the level of protection of electrical products from external loads caused by accidental contact, humidity or dust. The insulation class is indicated by 2 digits.
Level of protection from accidental contact and foreign matter (1st digit)
Digit | Protection from accidental contact | Protection from foreign matter |
---|---|---|
0 | No protection | No protection |
1 | Protection from large body parts (diameter 50 mm) | Large foreign objects (diameter 50 mm or more) |
2 | Finger protection (diameter 12 mm) | Medium-size foreign objects (diameter 12.5 mm or more, length up to 80 mm) |
3 | Tools and wires (diameter 2.5 mm or more) |
Small foreign objects (diameter 2.5 mm or more) |
4 | Tools and wires (diameter 1 mm or more) |
Granular foreign objects (diameter 1 mm or more) |
5(K) | Wire protection (as IP 4) dustproof | Dust deposits |
6(K) | Wire protection (as IP 4) dustproof | No dust ingress |
Level of waterproofing (2nd digit)
Digit | Protection from water penetration |
---|---|
0 | No protection |
1 | Protection from vertically dripping water |
2 | Protection from diagonally dripping water (up to 15°) |
3 | Protection from water spray at up to 60° from vertical |
4 | Protection from all-round water spray |
4k | Protection from all-round water spray at high pressure, applies to road vehicles only |
5 | Protection from water jets at any angle |
6 | Protection from streaming water (flooding) |
6k | Protection from streaming water at high pressure (flooding), applies to road vehicles only |
7 | Protection from temporary submersion |
8 | Protection from continuous submersion |
9k | Protection from water at high pressure / steam cleaning jets, applies to road vehicles only |
LUTZ France S.A.S
35, Avenue du gros chêne
95220 Herblay
France
Tel.: +33 (0)1 79 97 37 11
Fax: +33 (0)1 34 64 98 21
romain.pissard(at)lutz-france.fr