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BASICS OF IP-RATINGS

The IP Ingress Protection rating system provides
a means of classifying the Degrees of protection
from dust and water afforded by electrical
equipment and enclosures.

The system is recognised in most countries
and is set out in BS En60529 1992 Degrees of
protection.

First Number Second Number
Protection agains SOLIDS Protection against LIQUIDS
IP TEST IP TEST
0 No Protection 0 No protection

1 Protection against 1 Protection against vertically falling drops
objects over 50mm of water

2 Protection against 2 Protection against direct sprays of water up
objects over 12mm to 15° from the vertical

3 Protection against 3 Protection against 60° from the vertical
objects over 2.5mm

4 Protection against 4 Protection against water sprayed from all
objects over 1mm directions. Limited ingress permitted

5 Protection against 5 Protected against low pressure jets of water
dust. Limited ingress sprayed from all directions. Limited ingress

6 Totally protected 6 Protected against strong pressure jets of
against dust water

7 Protection against the effects of temporary
immersion between 15cm and 1m. for 30
min.

8 Protection against long periods of immersion
under pressure.

9K Protection against strong pressure jets of
water at a temp. of 80°C for duration of 30
seconds.