The IP protection index includes 2 digits. it represents the degree of protection provided by enclosures
- the first digit represents the protection against solids (dust)
- the second digit represents the protection against liquid
| First digit - solids | Second digit - liquids |
|---|
0 | no protection | no protection |
1 | Protection against solids over 50 mm in size | Protection against water drops falling vertically on a product in normal position |
2 | Protection against solids over 12 mm in size | Protection against water drops falling on a product with up to 15° inclination with vertical of his normal position |
3 | Protection against solids over 2.5 mm in size | Protection against water drops falling on a product with up to 60° inclination with vertical of his normal position |
4 | Protection against solids over 1 mm in size | Protection against water drops falling on a product in any direction |
5 | Dust protected | Protection against water jets in any direction |
6 | Dust proof | Protection against water bundles, waves, strong water jets (12.5 mm nozzle, distance 2.5 m to 3 m, flow rate 100 l/min 5%). |
7 |
| Protection against temporary immersion between 15cm and 1m |
8 |
| Protection against prolonged immersion beyond 1m and for 30 minutes.Depth specified by the manufacturer ex: IP68, 1h to 3meters |
| 9K | | Protection against high pressure cleaning by high temperature water or steam jets |
Refer to IEC (international Electrotechnical Commission) number IEC 60529, for more details www.iec.ch
NEMA is a US standard. NEMA stands for National Electrical Manufacturers Association.
An approximate correlation between NEMA and IP for water and dust is the following:
| IP52 | IP54 | IP56 |
| NEMA 12 | NEMA 13 | NEMA 4 & 4X |
IP focuses on water and dust
NEMA comprises more topics such are rust.
Refer to the site www.nema.org, standard 250 for more informations
