The designation to indicate the degrees of protection consists of the characteristic letters IP followed by two numerals (the “characteristic numerals”) indicating conformity with the conditions stated in tables below.
1st Number:
Protection of persons against contact with or approach to live parts and against contact with moving parts (other than smooth rotating shafts and the like) inside the enclosure and protection of the equipment against ingress of solid foreign bodies in accordance with IEC 60598-1:2003.
| IP Rating | Protection |
|---|---|
| 0 | No Protection. |
| 1 | Protected against solid bodies larger than 50 mm. |
| 2 | Protected against solid bodies larger than 12.5 mm. |
| 3 | Protected against solid bodies larger than 2.5 mm. |
| 4 | Protected against solid bodies larger than 1 mm. |
| 5 | Protected against dust (no harmful deposit). |
| 6 | Completely protected against dust. |
2nd Number:
Protection of the equipment inside the enclosure against harmful ingress of water.
| IP Rating | Protection |
|---|---|
| No Protection. | |
| 1 | Protected against vertically falling drops of water (condensation). |
| 2 | Protected against drops of water falling 15 degrees from the vertical. |
| 3 | Protected against drops of rainwater at up to 60 degrees from the vertical. |
| 4 | Protected against projections of water from all directions. |
| 5 | Protected against jets of water from all directions. |
| 6 | Protected against jets of water from all directions. Watertight equipment: protection against conditions on ship’s decks etc. |
| 7 | Protected against the effects of temporary immersion in water. |
| 8 | Protected against effects of prolonged immersion in water having regard to specific conditions. |
