PARADOX

First number (Protection against solid objects)

Definition

Second number (Protection against liquids)

Definition

0

No protection

0

No protection

1

Protected against solids objects over 50mm (e.g. accidental touch by hands

1

Protected against vertically falling drops of water

2

Protected against solids objects over 12mm (e.g. fingers)

2

Protected against direct sprays up to 15^o from the vertical

3

Protected against solids objects over 2.5mm (e.g. tools and wires)

3

Protected against direct sprays up to 60^o from the vertical

4

Protected against solids objects over 1mm (e.g. tools, wires and small wires

4

Protected against sprays from all directions - limited ingress permitted

5

Protected against dust - limited ingress (no harmful deposit)

5

Protected against low pressure jets if water from all directions - limited ingress permitted

6

Totally protected against dust

6

Protected against strong jets of water e.g. for use on shipdecks - limited ingress permitted

7

Protected against the effects of temporary immersion between 15cm and 1m. Duration of test 30 minutes

8

Protected against long periods of immersion under pressure