What is an IP Rating?

Ingress Protection, or IP Ratings are a defined international standard to define sealing effectiveness (EN 60529). IP Ratings are used to define the protection of enclosures against intrusion from solid particle and moisture intrusion.

What do the numbers in an IP Rating mean?

The numbers that follow IP each have a specific meaning. The first digit indicates the degree of protection of the enclosure from intrusion by solid particles and foreign bodies. The second digit defines the protection of the enclosure from water. The two tables below give details of the full IP Rating system:

IP Ratings – What They Mean

First Digit – Solid Particle Protection

LevelEffective AgainstDescription
0No protection against contact and ingress of objects
1>50mmAny large surface of the body, such as the back of a hand, but no protection against deliberate contact with a body part
2>12.5mmFingers or similar objects
3>2.5mmTools, thick wires, etc.
4>1mmMost wires, slender screws, large ants etc
5Dust protectedIngress of dust is not entirely prevented, but it must not enter in sufficient quantity to interfere with the satisfactory operation of the equipment.
6Dust tightNo ingress of dust; complete protection against contact (dust tight).  A vacuum must be applied.  Test duration of up to 8 hours based on air flow.

Second Digit – Liquid Ingress Protection

LevelEffective AgainstDescription
0None
1Dripping waterDripping water (vertically falling drops) shall have no harmful effect on the specimen when mounted in an upright position.
2Dripping water when tilted at 15˚Vertically dripping water shall have no harmful effect when the enclosure is tilted at an angle of 15˚ from its normal position.
3Spraying waterWater falling as spray at any angle up to 60˚ from the vertical shall have no harmful effect.
4Splashing of waterWater splashes against the enclosure from any direction shall have no harmful effect.
5Water jetsWater projected by a nozzle (6.3mm) against the enclosure from any direction shall have no harmful effects.
6Powerful water jetsWater prjected in powerful jets (12.5mm nozzle) against the enclosure from any direction shall have no harmful effects.
6KPowerful water jets with increased pressureWater projected in powerful jets (6.3mm nozzle) against the enclosure from any direction, under elevated pressure, shall have no harmful effects.
7Immersion, up to 1m depthIngress of water in harmful quantity shall not be possible when the enclosure is immersed in water at 1m depth for at least 30 minutes.
8Immersion, 1m or more depthThe equipment is suitable for continuous immersion in water without any harmful effects on the contents.
9KPowerful high temperature water jetsProtected against close-range high pressure, high-temperature spray downs

Our Product Range

While we cover a huge range of electrical enclosures, our most common IP ratings are probably IP 55, 65 and 67. For quick reference, these are defined below:

  • IP55 Rating – IP rated as “dust protected” and protected against water projected from a nozzle.
  • IP65 Rating – IP rated as “dust tight” and protected against water projected from a nozzle.
  • IP67 Rating – IP rated as “dust tight” and protected against immersion.

 

 

IP Rating Explained What is an IP Rating? Ingress Protection, or IP Ratings are a defined international standard to define sealing effectiveness (EN 60529). IP…