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degrees of protection IP (International Protection)

1° number	2° number	added letter	additional letter
0...1	0...8	A...D	H...W

1° NUMBER
protection against the contact of external solid bodies and against the access to dangerous parts

numb.	protection of the material	protection of the persons
0	not protect
1	protected against solid bodies of superior dimensions to 50 mm.	protect against the access with the back of the hand
2	protected against solid bodies of superior dimensions to 12 mm.	protect against the access with a finger
3	protected against solid bodies of superior dimensions to 2.5 mm.	protect against the access with a tool
4	protected against solid bodies of superior dimensions to 1 mm.	protect against the access with a wire
5	protect against the powder	protect against the access with a wire
6	totally protect against the powder	protect against the access with a wire

2° NUMBER
protection against the penetration of the liquids

numb.	protection of the material
0	not protect
1	protect against the vertical fall of water drops
2	protect against the fall of water drops with inclination max of 15°
3	protect against the rain
4	protect against the water sprays
5	protect against water jets
6	protect against big waves
7	protect against the effects of the immersion
8	protected against the effects of the submersion

added letter
(optional) (a)

lett.	protection of the persons
A	protect against the access with the back of the hand
B	protect against the access with a finger
C	protect against the access with a tool
D	protect against the access with a wire

(a) only used if:
the real protection against agreed to dangerous births is superior to the suitable one from the first number;
the protection against the access to dangerous parts is only indicated and before the figure comes therefore replaced from one x;

additional letter
(optional)

lett.	protection of the material
H	equipment to high tension
M	tried against the harmful due effects to the entry of the water with in operation apparatus
S	tried against the harmful due effects to the entry of the water with apparatus not in operation
W	adapted to the use in specified atmospheric conditions

(ver. 02.12.01 )

unit of measure conversions equivalences

degrees of protection IP (International Protection)

unit of measure
conversions equivalences