Essential Guide

What is an IP Rating


The IP Code (or International Protection marking) rates the degree of protection a product has against intrusion by both solid and liquid particles. 

The format of the rating is IPxx. The first digit relates to the amount of protection from solid particles and the second is for liquid particles. 

In both cases ingress may be permitted but only in a way that won't affect the operation of the device or equipment.


First number (protection against solid objects)ProtectionSecond number (protection against liquids)Definition
   0No protection   0No protection
   1Objects greater than 50mm e.g. back of a hand   1Vertically falling drops
   2Objects greater than 12.5mm e.g. fingers or small objects   2Direct sprays of water up to 15º from vertical
   3Objects greater than 2.5mm e.g. tools or thick wires   3Direct sprays of water up to 60º from vertical
   4Objects greater than 1mm e.g. thin wires or small tools   4Direct sprays of water from all directions, limited ingress permitted
   5Protected against dust with limited ingress   5Low pressure jets of water from all directions, limited ingress permitted
   6Totally protected against dust   6Strong jets of water from all directions, limited ingress permitted
   7Temporary immersion up to 1m depth
   8Continuous immersion in water deeper than 1m as per the manufacturers specification