IP rating (Ingress Protection) is the level of protection effectiveness of electrical enclosures against intrusion from solid particles and water.
First digit: Solid particle protection
|0||N/A||No protection against contact and ingress of objects.|
|1||>50 mm||Any large surface of the body, such as the back of a hand, but no protection against deliberate contact with a body part|
|2||>12.5 mm||Fingers or similar sized objects.|
Tools, thick wires, etc.
|4||>1 mm||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.|
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: Water ingress protection
|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.
|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.
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.
Water splashing against the enclosure from any direction shall have no harmful effect, utilizing either an oscillating fixture or a spray nozzle with no shield.
|5||Water Jets||Water projected by a nozzle (6.3 mm) against enclosure from any direction shall have no harmful effects.
|6||Powerful water Jets||Water projected in powerful jets (12.5 mm nozzle) against the enclosure from any direction shall have no harmful effects.
|7||Immersion up to 1 m||Ingress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time (up to 1 m of submersion).
|8||Immersion, 1 m or deeper
||The equipment is suitable for continuous immersion in water under conditions which shall be specified by the manufacturer.
|9||Powerful high temperature water jets
||Protected against close-range high pressure, high temperature spray downs.