A full IP number contains three digits although commonly only two are specified.
The first digit specifies the level of protection against the penetration
of solid objects. The second digit specifies the level of protection
against the penetration of moisture. The third digit (often omitted)
specifies the level of protection against mechanical impact.
| IP (ingress protection) ratings |
| 1st digit, solid objects |
2nd digit, moisture |
3rd digit, mechanical impact |
| X |
Not tested and unspecified. |
| 0 |
No protection. |
| 1 |
Solid objects greater than 50 mm. |
| 2 |
Solid objects greater than 12 mm. |
| 3 |
Solid objects greater than 2.5 mm. |
| 4 |
Solid objects greater than 1.0 mm. |
| 5 |
No harmful deposits of dust. |
| 6 |
Dust tight. |
|
| X |
Not tested and unspecified. |
| 0 |
No protection. |
| 1 |
Vertically dripping water. |
| 2 |
Verrtically dripping water when object is tilted at 15 degrees. |
| 3 |
Water spraying at an angle of up to 60 degrees from the
vertical. |
| 4 |
Spraying water from all directions. |
| 5 |
Water jets from all directions. |
| 6 |
Heavy seas and strong water jets from all directions. |
| 7 |
Immersion in water from 15 cm to 1 m. |
| 8 |
Continuous submersion in water at a depth greater than 1 m. |
|
| X |
Not tested and unspecified. |
| 0 |
No protection |
| 1 |
Impact of 0.225 joules. |
| 2 |
Impact of 0.375 joules. |
| 3 |
Impact of 0.50 joules |
| 4 |
Not defined. |
| 5 |
Impact of 2.0 joules. |
| 6 |
Not defined |
| 7 |
Impact of 6.0 joules. |
| 8 |
Not defined |
| 9 |
Impact of 20.0 joules. |
|
