IP stands for Ingress Protection and indicates the degree of protection that electrical equipment offers against the penetration of moisture and solid objects.

Protection against objects and dust (1st IP rating)

IP 0X - not protected
IP 1X - protected against objects with a diameter greater than 50mm
IP 2X - protected against objects with a diameter greater than 12mm
IP 3X - protected against objects with a diameter greater than 2.5mm
IP 4X - protected against objects with a diameter greater than 1mm
IP 5X - protected against dust
IP 6X - dust proof

Protection against water (2nd IP rating)

IP X0 - not protected
IP X1 - protected against dripping water
IP X2 - protected against dripping water at an angle of up to 15 degrees
IP X3 - protected against spraying water
IP X4 - protected against splashing water
IP X5 - protected against water jets
IP X6 - protected against downpours
IP X7 - protected against immersion (30 minutes to 1 meter deep)

This information is not legally binding.