IP Code

The IP Code (or International Protection Rating, sometimes also interpreted as Ingress Protection Rating) consists of letters IP followed by two digits and an optional letter.

First Digit: Solids

The first digit indicates the degree that persons are protected against contact with live parts and the degree that equipment is protected against the ingress of solid foreign objects.

First Digit  Protection  Description 
 0 Not protected No protection against contact and ingress of objects
 1 Objects greater than 50mm Any large surface of the body, such as the back of the hand but no protection against

deliberate access

 2 Objects greater than 12.5mm Fingers or similar objects
 3 Objects greater than 2.5mm Tools, thick wires etc
 4 Objects greater than 1.0mm 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 satisfactory operation of the equipment

6 Dust tight No ingress of dust

Second Digit: Liquids

The second digit indicates the degree of protection of the equipment inside the enclosure against the harmful ingress of water.

Second Digit  Protection Description
 0 Not protected Not protection against ingress of water
 1 Vertically dripping water Dripping water (vertically falling drops) shall have no harmful effect
 2 Dripping water tilted 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 (6.3mm) against 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 manufacture. 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 it produces no harmful effects.

 

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