Level Sized | Effective Against | Description |
0 | — | No protection against contact and ingress of objects |
1 | 50mm | Any large surface of the body, such as the back of a hand, but no protection against deliberate contact with a body part |
2 | 12.5mm | Fingers or similar objects |
3 | 2.5mm | Tools, thick wires, etc. |
4 | 1mm | Most wires, slender screws, large ants etc. |
5 | Dust Protected | Ingress of dust is not entirely prevented, but it must not enter in sufficient quantity to interfere with the satisfactory operation of the equipment. |
6 | Dust tight | No ingress of dust; complete protection against contact (dust tight). A vacuum must be applied. Test duration of up to 8 hours based on air flow. |
Second digit: Liquid ingress protection The second digit indicates the level of protection that the enclosure provides against harmful ingress of water.
Level Sized | Protection Against | Effective Against | Details |
0 | — | None | — |
1 | Dripping Water | Dripping water (vertically falling drops shall have no harmful effect on the specimen when mounted in an upright position onto a turntable and rotated at 1 RPM. Test duration: 10 minutes Water equivalent to 1 mm rainfall per minute | Test duration: 10 minutes Water equivalent to 1 mm rainfall per minute |
2 | Dripping water when tilted at 15° | Vertically dripping water shall have no harmful effect when the enclosure is tilted at an angle of 15° from its normal position. A total of four positions are tested within two axes. Test duration: 2.5 minutes for every direction of tilt (10 minutes total Water equivalent to 3 mm rainfall per minute | Test duration: 2.5 minutes for every direction of tilt (10 minutes total)Water equivalent to 3 mm rainfall per minute |
3 | Spraying water | Water falling as a spray at any angle up to 60° from the vertical shall have no harmful effect, utilizing either: a) an oscillating fixture, or b) A spray nozzle with a counterbalanced shield. Test a) is conducted for 5 minutes, then repeated with the specimen rotated horizontally by 90° for the second 5-minute test. Test b) is conducted (with shield in place) for 5 minutes minimum. | For a Spray Nozzle:Test duration: 1 minute per square meter for at least 5 minutes[2]Water volume: 10 litres per minute Pressure: 50–150 kPa For an oscillating tube: Test duration: 10 minutes Water Volume: 0.07 l/min per hole |
4 | Splashing of water | Water splashing against the enclosure from any direction shall have no harmful effect, utilizing either: a) an oscillating fixture, or b) A spray nozzle with no shield. Test a) is conducted for 10 minutes. Test b) is conducted (without shield) for 5 minutes minimum. | Oscillating tube: Test duration: 10 minutes, or spray nozzle |
5 | Water Jets | Water projected by a nozzle (6.3 mm) against enclosure from any direction shall have no harmful effects. | Test duration: 1 minute per square meter for at least 15 minutes Water volume: 12.5 litres per minute Pressure: 30 kPa at distance of 3 m |
6 | Powerful Water Jets | Water projected in powerful jets (12.5 mm nozzle) against the enclosure from any direction shall have no harmful effects. | Test duration: 1 minute per square meter for at least 3 minutes Water volume: 100 litres per minute Pressure: 100 kPa at distance of 3 m |
