Ingress protection is the degree of protection provided by the product enclosure. In many cases, the level of protection provided by the enclosure is marked on the product in the form of an "IP" code. For example, IP 55 would indicate a limited dust protected (first digit 5) piece of equipment which is protected against low pressure water jets (second digit 5).
Ingress Protection (IP) Rating Chart
1st Number Solids
Protection Provided
2nd Number Liquids
Protection Provided
0
No Protection
0
No Protection
1
Protected against solid objects up to 50mm e.g. accidental touch by hands
1
Protected against vertically falling drops of water e.g. condensation
2
Protected against solid objects up to 12mm e.g. fingers
2
Protected against direct sprays of water up to 15 deg from the vertical
3
Protected against solid objects over 2.5mm e.g. tools
3
Protected against direct sprays of water up to 60 deg from the vertical
4
Protected against solid objects over 1mm e.g. wires
4
Protected against water sprayed from all directions – limited ingress permitted
5
Protected against dust – Limited ingress (no harmful deposit)
5
Protected against low pressure jets from all directions – limited ingress permitted
6
Totally protected against dust
6
Protected against strong jets of water e.g. for use on ship decks – limited ingress permitted
7
Protected against the affects of immersion between 15cm and 1m
8
Protected against long periods of immersion under pressure