C U S T O M E R I N F O R  M A T I O N   KDI00013  as at July 26th 2001
“DEGREES OF PROTECTION ACCORDING TO   DIN 40 050 / IEC 529 / VDE 0470 / EN 60529“  

Degrees of protection are classified according to DIN 40 050. The degrees of protection are identified by means of internationally valid short symbols (IP=International Protection). The abbreviation IP is followed by two digits. The first digit stands for the protection against the intrusion of solid bodies. The second digit describes the degree of protection against the intrusion of water. These specifications refer to untreated enclosures regardless of influences such as ageing, temperature changes,…

Degrees of protection for protection against contact and foreign substances.

Degrees of protection for protection against water.

First
code digit

Degrees of protection

Second code digit

Degrees of protection

protection against

Description

protection against

Description

0

No protection

-

0

No protection

-

1

Large foreign bodies

Protection against accidental, large-area contacting of active parts or parts in motion inside the equipment, e.g. with one’s hands. No protection against deliberate access to these parts. Protection against intrusion of solid foreign bodies with a diameter larger than 50 mm. .

1

Vertically falling dripping water

Vertically falling drops of water must not have any damaging effects.

2

Medium-sized foreign bodies

Protection against contacting active parts or parts in motion inside the equipment with one’s fingers. Protection against intrusion of solid foreign bodies with a diameter larger than 12 mm  

2

Diagonally falling dripping water

Drops of water falling at any angle up to 15° to the perpendicular must not have any damaging effects.

3

Small foreign bodies

Protection against contacting active parts or parts in motion inside the equipment with tools, wires or similar things with a diameter larger than 2,5 mm. Protection against intrusion of solid foreign bodies with a diameter larger than 2,5 mm.

3

Sprayed water

Drops of water falling at any angle up to 60° to the perpendicular must not have any damaging effects.

4

Granular foreign bodies

Protection against contacting active parts or parts in motion inside the equipment with tools, wires or similar things with a diameter larger than 1 mm.

4

Splash water

Water splashing against the equipment from all sides must not have any damaging effect.

5

Dust deposit

Complete protection against contact with energised parts or parts in motion inside the equipment. Protection against dangerous dust deposits. The intrusion of dust is not completely prevented, but dust must not enter at such a rate that the funtioning is affected. 

5

Jet of water

A jet of water from a jet nozzle directed towards the equipment from all sides must not have any damaging effects.  

6

Dust intrusion

Complete protection against contact with energised parts or parts in motion inside the equipment; protection against dust intrusion

6

Flooding

Water must not permeate at such a rate that it may cause damages in case of temporary floodings, e.g. caused by choppy seas.

7

Dipping

Water must not permeate at such a rate that it may cause damages if the equipment is dipped in water under the determinated pressure-/time conditions of 0,15 – 1m.

Example: IP 54 first code digit = 5 protected against dust and protected with a wire against access to endangered parts. first code digit = 4 protected against splash water

8

Immersion

Water must not permeate at such a rate that it may cause damages if the equipment is immerged in water under determinated conditions..

9K

High pressure-/steam jet cleaning

Water directed against the equipment from all sides under high pressure must not have any damaging effects