Industrial PC IP Ratings Explained

Level Object size protected against Effective against
0 - No protection against contact and ingress of object
1 >50mm Any large surface of the body, such as the back of the hand, but noprotection 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
Level Object size protected against Effective against
0 Not protected No protection against contact and ingress of object
1 Dripping water Dripping (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 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 effects
5 Water jets Water projected by a nozzle (6.3mm) against the enclosure from any direction shall have no harmful effects
6 Powerful water jets Water projected in powerful jets (12.5mm nozzle) against the enclosure from any direction shall have no harmful effects
7 Immersion up to 1m 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 1m of submersion)
8 Immersion beyond 1m The equipment is suitable for continuous immersion in water under conditions which shall be specified by the manufacturer. Normally this will mean that the equipment is hermetically sealed. However, with certain types of equipment, it can mean water can enter but only in such a manner that it produces no harmful effects.