Indice IP
Les indices IP (« Ingress Protection » (protection contre la pénétration)) sont définis dans la norme internationale EN 60529 et évaluent le degré de protection fourni par les boîtiers électriques contre l'intrusion de solides et de liquides (objets, particules, poussière, eau, etc.).
Plus la valeur de chaque chiffre est élevée, plus la protection est élevée.
| Ingress Protection | Solids Rating | Liquids Rating |
| IP | 6 | 7 |
Solids
| Rating | Definition |
| 0 | No protection against contact and ingress of objects |
| 1 | Protected against solid objects greater than 50mm in size, like a hand |
| 2 | Protected against solid objects greater than 12.5mm in size, like a finger |
| 3 | Protected against solid objects greater than 2.5mm in size, like a screwdriver |
| 4 | Protected against solid objects greater than 1mm in size, like a thick wire |
| 5 | Dust protected. Limited ingress of dust permitted. Will not interfere with operation of the equipment |
| 6 | Dust tight. No ingress of dust |
Liquids
| Rating | Definition |
| 0 | No protection |
| 1 | Protected against water drops |
| 2 | Protected against water drops at a 15° angle |
| 3 | Protected against water spray at 60° angle |
| 4 | Protected against water splashing from any angle |
| 5 | Protected against water jets from any angle |
| 6 | Protected against powerful jets of water |
| 7 | Water tight against the effects of temporary submersion in water. Test requires 30 minute at 1 meter depth |
| 8 | Watertight against the effects of continuous submersion in water (up to 4 hours) |
