IP Codes for Electrical Enclosures – What do they Mean?

The IP Code, otherwise known as ‘Ingress Protection’, ratings are defined in the international standard EN 60529 (or European IEC 60529.) Similar to NEMA ratings by the National Electrical Manufacturers Association, the IP ratings are used define the level of sealing effectiveness of enclosures against penetration from foreign matter and water/moisture.  The ratings for an enclosure are determined by actual testing.

The IP number is composed of the letters ‘IP’, two numbers and possibly one or two letters.  The first number refers to the protection level against solids, and the second number to the liquid protection level. The higher the  number, the greater the protection level. The optional letter codes relate to protection of persons against access to hazards within the cabinet, and any other special notice.

Below tables show the possible protection ratings and the description-

IP Table

Example – IP54 – IP – Code Letters, 1st Numeral is 5, 2nd Numeral is 4

An enclosure with an IP rating of this designation, IP54 –

  • 5 – Equipment within enclosure is protected from ingress dust of a limited quantity, such that no interference of performance is caused
  • 4 – Equipment within enclosure should have no harmful effects due to water splashed against the enclosure from any angle

Here at EXAIR we work with IP ratings everyday.  The Cabinet Cooler System line of products are made to keep electrical enclosures cool inside, while maintaining the integrity of the enclosure IP Code rating.

If you would like to talk about IP or NEMA ratings and the Cabinet Cooler Systems or any of the EXAIR Intelligent Compressed Air® Products, feel free to contact EXAIR and myself or one of our Application Engineers can help you determine the best solution.

Brian Bergmann
Application Engineer

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