A GUIDE TO INTERNATIONAL PROTECTION (IP) RATINGS

 

The IP code indicates the degree of protection provided by enclosures for electrical equipment (AS 1939-1986)


IP1

The first numeral indicates protection of persons against access to dangerous parts and protection of internal equipment against the ingress of solid foreign objects

X - 
Protection Unspecified (untested)

0 - 
No special protection provided

1 - 
Protection of hand against accidental access to dangerous parts, and protection of equipment against objects larger than 50mm*

2 - 
Protection of fingers against accidental access to dangerous parts, and protection of equipment against objects larger than 12mm*

3 - 
Protection against objects larger than 2.5mm* (eg: fine tools, wires)

4 - 
Protection against objects larger than 1mm* (eg: fine tools, wires)

5 - 
Protection against entry of dust in sufficient quantity to interfere with satisfactory operation of equipment

6 - 
Complete protection against entry of dust

* The dimension applies to the smallest of three mutually perpendicular dimensions of the object against which protection is provided


4

The second numeral indicates protection of internal equipment against harmful ingress of water

X - 
Protection Unspecified (untested)

0 - 
No special protection provided

1 - 
Protection against drops of water falling vertically

2 - 
Protection against drops of water falling vertically when object is tilted by up to 15U from its nomal position (in any direction)

3 - 
Protction against spraying water at up to 60U from the vertical

4 - 
Protection against splashing and spraying water from all practicable directions

5 - 
Protection against a low pressure jet of water from all practicable directions

6 - 
Protection against heavy seas or a strong jet of water from all practicable directions

6D - 
Protection against driving rain at angles down to horizontal

7 - 
Protection against immersion

8 - 
Protection against submersion