The chart at the right illustrates the use of special symbols in the IP classification system. In the "1st digit" column, not the grid-like symbols net to numbers 6 and 6. In the "2nd digit" column numbers 3-8 are symbolised by teardrop shaped symbols, sometimes enclosed in a box or a triangle, sometimes unenclosed (#7-8). These symbols can be placed on equipment to illustrate the IP protection provided.

IP52 = IP Letter Code______________________IP 1st Digit________________________________5 2nd Digit____________________________________4
1st Digit	Protection from solid objects		2nd Digit	Protection from moisture
0	Non protected		0	Non protected
1		Protected against solid objects greater than 50mm	1		Protected against dripping water
2		Protected against solid objects greater than 12mm	2		Protected against dripping water when tilted up to 15°
3		Protected against solid objects greater than 2.5mmØ	3		Protected against spraying water
4		Protected against solid objects greater than 1.0mmØ	4		Protected against splashing water
5		Dust protected	5		Protected against water jets
6		Dust tight	6		Protected against heavy seas
Note: EN 60529 does not specify sealing effectiveness against the following: mechanical damage of the equipment; the risk of explosions; certain types of moisture conditions, e.g. those that are produced by condesation; corrosive vapours; funus; vermin			7		Protected against against the effect of immersion
			8		Protected against submersion (see note)