Developed by the European Committee for Electrotechnical Standardization (CENELEC), these standards are designed to numerically rate an electrical product on the level of protection its enclosure provides.
A two digit number is used represent the resistance of an electrical item (or its enclosure) to environmental effects:
- The first digit represents protection against ingress of solid objects
- The second digit represents protection against ingress of liquids
- The third digit (optional) represents mechanical impact damage
The larger the value of each digit, the greater the protection. For example, a product rated as IP57 would be better protected against environmental factors than another similar product that was only rated as IP43 or to put it another way an item rated at IP67 would be totally protected against dust ingress and withstand immersion in water up to a depth of 1m for at least 30 minutes.
IP65- totally protected against dust, and can withstand pressure jets of water from all directions
IP68 – totally protected against dust and can withstand long periods of immersion under pressure/water