Degrees of protection IP (International Protection)

Degrees of protection IP (International Protection)

 

1-st number

2-nd number

added letter

additional letter

0...6

0...8

A...D

H...W

 

 

Added letter
(optional)

Letter

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

H 

equipment to high tension

M 

tested against the harmful due effects to the entry of the water with apparatus in operation.

S 

tested 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

 

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

 

0

 No protection
 

 

 -

1

Protection against large
foreign bodies
            

1_

Protection of persons from accidental large area direct contact with active or internal moving parts (e.g. hand contact). Protection of the object from access of solid foreign matter larger than Ø50mm.

2

Protection against medium-size foreign bodies            

2_

Protection of persons from finger contact with active or internal moving parts. Protection of the object from access of solid foreign matter larger than Ø12mm.

3

Protection against small foreign bodies           

3_

Protection of persons from contact with active or internal moving parts with tools, wires or similar foreign matter thicker than Ø2.5mm. Protection of the object from access of solid foreign matter larger than Ø2.5mm.

4

Protection against granular foreign bodies           

4_

Protection of persons from contact with active or internal moving parts with tools, wires or similar foreign matter thicker than > than Ø1mm.

5

Protection against deposits of dust      

5_

Total protection of persons from contact with voltage carrying or internal moving parts. Protection of the object from harmful deposits of dust. Ingress of dust is not completely prevented, but dust is prevented from entering in a quantity that would impair the functioning of the object.

6

Protection against ingress of dust      

6_

Total protection of persons from contact with voltage carrying or internal moving parts. Protection of the object from ingress of dust.

 

2-nd NUMBER protection against the penetration of the liquids

 

0

No protection

 

 -

1

Protection against water dripping vertically         

 

_1

Water drops falling vertically must not have any harmful effect.

2

Protection against water dripping up to 15°          

 

_2

Water drops falling at any angle up to 15° from vertical must not have any harmful effect.

3

Protection against spray water 
        

_3

Water hitting the object at any angle up to 60° from vertical must not have any harmful effect.

4

Protection against splash water
         

_4

Water splashing against the object from all directions must not have any harmful effect.

5

Protection against jet water
          

_5

A jet of water sprayed against the object from all directions must not have any harmful effect.

6

Protection against flooding
         

_6

Water of temporary flooding, as in heavy seas, must not enter the object in any harmful quantity.

7

Protection against dipped state

_7

If the object is dipped into water (150mm to 1000mm), under the defined conditions of pressure and time, water must not enter the object in any harmful quantity.

8

Protection during submerged state
         

_8

If the object is submerged in water under defined extreme conditions, water must not enter the object in any harmful quantity.

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