The IP classification, (International Protection), which is used internationally, is an accurate method for indicating the protection degrees of enclosures.
The IP rating indicates how resistant a product is to water, objects and dust. Depending on the situation, the IP class must be selected so that adequate protection is achieved.

The IP degree of protection is indicated by two numbers:

1. Protection against ingress of objects and dust:

First Key Figure Description IP
designation		 Name
0 not  protected IP 1X
1 protected against solid objects larger than 50 mm IP 1X Protection against accidental
2 protected against solid objects larger than 12 mm IP 2X touch safe
3 protected against solid objects larger than 2.5 mm IP 3X
4 protected against solid objects larger than 1 mm IP 4X
5 protected from dust IP 5X dust free
6 dustproof IP 6X dustproof

2. Protection against water:

Second Key Figure Description IP
designation		 Name
0 not protected IP X0
1 protected against dripping water IP X1 Drip-proof
2 protected against dripping water at a
tilt up to 15 degrees		 IP X2
3 protected against spraying water IP X3 Rainwaterproof
4 protected against splashing water IP X4 Splash-proof
5 protected against water jets IP X5 Splashproof
6 protected against downpours IP X6
7 protected against immersion up to 1m deep and for 30 minutes IP X7 Waterproof
8 protected against staying under water IP X8 Pressure watertight

Examples:

IP 21 Drip-proof
IP 22 Touch safe
IP 23 Rainwaterproof
IP 44 Splashproof
IP 54 Dust-free / splash-proof
IP 55 Dust-free / Splash-proof
IP 67 Dustproof / Waterproof