To indicate the level of protection an electrical item has against dust and water, they are marked with an IP rating. The IP rating consists of the letters “IP” followed by two digits, where the first describes accessibility to live parts and the second describes water protection.
An item marked IP 54 is:
First digit: dust-protected
Second digit: withstands water spray from all directions.
First digit:
0 No protection.
1 Protected against access with objects larger than 50 mm.
2 Protected against access with objects larger than 12 mm.
3 Protected against access with objects larger than 2.5 mm.
4 Protected against access with objects larger than 1 mm.
5 Dust-protected
6 Dust-tight
Second digit:
0 No protection
1 Protected against dripping water
2 Protected against dripping water. The device must not be tilted more than max 15° from the normal position.
3 Protected against spraying water. Max angle 60°.
4 Protected against water spray from all directions.
5 Protected against water jets from a nozzle
6 Protected against powerful water jets
7 Can be temporarily immersed in water without damage.
8 Suitable for continuous immersion in water, according to the manufacturer’s instructions.
A robust enclosure is of the utmost importance for electrical or electronic equipment in demanding environments, where dust, corrosive substances, moisture and water can penetrate. A robust enclosure minimizes the risks of electric shock, fire and explosion.
For more detailed information, see the link below:
IP rating
