The IP codes are defined in the IEC standard 60529. The ingress protection of each panel is in the form of a code such as IP65. The first number indicates the protection against dust and other particles while the second numbers denotes the protection against water.
The first number indicates the following.
|Level||Object size protected against||Effective against|
|0||—||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 objects|
|3||>2.5 mm||Tools, thick wires, etc.|
|4||>1 mm||Most wires, screws, 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; complete protection against contact|
|6||dust tight||No ingress of dust; complete protection against contact |
The Second letter indicates the degree of protection of the panel against the entry of water.
|1||dripping water||Dripping water (vertically falling drops) shall have no harmful effect.|
|2||dripping water when tilted up to 15°||Vertically dripping water shall have no harmful effect when the enclosure is tilted at an angle up to 15° from its normal position.|
|3||spraying water||Water falling as a spray at any angle up to 60° from the vertical shall have no harmful effect.|
|4||splashing water||Water splashing against the enclosure from any direction shall have no harmful effect.|
|5||water jets||Water projected by a nozzle against enclosure from any direction shall have no harmful effects.|
|6||powerful water jets||Water projected in powerful jets 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 beyond 1 m||The equipment is suitable for continuous immersion in water under conditions which shall be specified by the manufacturer.|
|NOTE: Normally, this will mean that the equipment is hermetically sealed. However, with certain types of equipment, it can mean that water can enter but only in such a manner that produces no harmful effects.|