Marine Dictionary & Glossary of Boating Terms
Similar Terms: IP5,IP4,IP54,IP56,IPX65,IP6,IP67,IP68,IP7,Ingress Protection Rating,Ingress Protection Code,International Protection Rating,IPX0,IPX1,IPX2,IPX3,IPX4,IPX5,IPX5/6,IPX6,IPX7,IPX8
Ingress Protection (IP) Rating or International Protection Rating, consists of the letters IP followed by two digits or one digit and one letter and an optional letter, as defined in international standard IEC 60529. The IP Code classifies and rates the degrees of protection provided against the intrusion of solid objects (including body parts like hands and fingers), dust, accidental contact, and water in mechanical casings and with electrical enclosures. The standard aims to provide users more detailed information than vague marketing terms such as waterproof or splashproof. However, no edition of the standard is openly published for unlicensed readers, hence leaving space for varying interpretation.
The code is comprised of 4 digits; IP followed by the numerical value for protection against solid particle ingress, followed by the numerical value for protection against liquid ingress. Where there is no protection rating with regard to one of the criteria, the digit is replaced with the letter X.
Solids - First Digit (First Digit indicates the level of protection that the enclosure provides against access to hazardous parts (e.g. electrical conductors, moving parts) and the ingress of solid foreign objects.
| Level || Object Size Protected Against || Effective Against |
| 0 ||--|| No protection against contact and ingress of objects |
| 1 ||>50mm || Any large surface of the body 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, 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 |
Liquids - Second Digit
| Level || Protected Against || Details |
| 0 || Not protected ||--|
| 1 || Dripping water || Dripping water (vertically falling drop) 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 at 10 liters/min at a pressure of 80-100kN/m2 for 5 min shall have no harmful effect |
| 4 || Splashing water || Water splashing against the enclosure from any direction at 10 liters/min at a pressure of 80-100kN/m2 for 5 min shall have no harmful effect |
| 5 || Water jets || Water projected by a 6.3mm nozzle at a flow rate of 12.5 liters/min at a pressure of 30kN/m2 for 3 minutes from a distance of 3 meters against enclosure from any direction shall have no harmful effects |
| 6 || Powerful water jets/heavy seas || Water projected in powerful jets against enclosure from any direction at a flow rate of 100 liters/min at a pressure of 100kN/m2 for 3 minutes from a distance of 3 meters 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 condition 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 that water can enter but only in such a manner that produces no harmful effects |