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How to interpret an IP rating

Supplier: Process Systems
06 September, 2013

The IP rating is the protection level provided by enclosures to electrical equipment, this denominated by a two digit number.

For example IP67 is;

- 6 product is completely protected against dust

- 7 product is completely protected against effect of immersion

Please see below table for explanation of all digits.

 

First Digit

 

Second Digit

 

0

No protection

0

No protection

1

Protected against solid bodies larger than 50mm (eg. accidental contact with the hand)

1

Protected against vertically falling drops of water (condensation)

2

Protected against solid bodies larger than 12mm (eg. finger of the hand)

2

Protected against drops of water falling at up to 15 degrees from the vertical

3

Protected against solid bodies larger than 2.5mm (eg. tools and wires)

3

Protected against drops of rain water at up to 60 degrees from the vertical

4

Protected against the solid bodies larger than 1mm (fine tools and small wires)

4

Protected against splashings of water from all directions (360 degrees)

5

Protected against dust (no harmful deposit). Completed protection from solid bodies

5

Protected against jets of water from all directions (12.5mm bore nozzle, 10mm head, 3m distance)

6

Completed protection against dust. Complete protection from solid bodies.

6

Protected against jets of water of similar force to heavy seas. Same conditions as 5 but distance of 1.5m

 

7

Protected against the effects of immersion at a specified pressure for a limited time (1m immersion).

 

8

Protected against the effects of immersion at a specified pressure for unlimited time(1m immersion).