Protection against solid objects
First Number

0 No protection

1 Protected from solid foreign objects of 50 mm and greater (e.g., accidental touch by hands)

2 Protected from solid objects of 12 mm and greater (e.g., fingers)

3 Protected from solid objects more than 2.5 mm (e.g., tools and small wires)

4 Protected from solid objects more than 1 mm (e.g., small wires)

5 Protected from dust; limited entrance (no harmful deposit)

6 Totally protected from dust

Protection against liquids
Second Number

0 No protection

1 Protected from vertically-falling drops of water (e.g., condensation)

2 Protected from direct sprays of water up to 15° from vertical

3 Protected from direct sprays of water up to 60° from vertical

4 Protected from water sprayed from all directions; limited entrance allowed

5 Protected from low pressure jets of water from all directions; limited entrance allowed

6 Protected from strong jets of water (e.g., for use on ship decks); limited entrance allowed

7 Protected from the effects of immersion between 15cm and 1m

8 Protected from extended periods of immersion under pressure

IP Numbers with Hermetically Sealed (HS) or Environmentally Protected (EP) Ratings
Rating Protection

EP Dust proof, not protected from moisture or water

IP65 Dust proof, protected from splashes and low-pressure jets

IP66 Dust proof, protected from strong water jets

IP67 Dust proof, protected from temporary immersion in water 1 meter deep for 30 minutes

IP68 Dust proof, protected from continuous immersion in water under more severe conditions than

IP66/68 Dust proof, protected from strong water jets and/or constant immersion