Understanding Ingress protection ip55

The first digit indicates the level of protection the enclosure provides against access to hazardous parts (e.g., electrical conductors, moving parts) and the ingress of solid foreign objects.

The IP code or Ingress Protection code indicates how well a device is protected against water and dust. It is defined by the(IEC) under theIEC 60529which classifies.

In the original IEC 60529 standard from year 1976, the letters IP are used without providing an explanation, and referred as "characteristic letters".In the next editions of the standard, from years 1989 and 1999 respectively, the IP is explained to denote "international protection" on both.

In the U.S., thedefinesin NEMA standard number 250. The following table outlines which IEC 60529 IP code each respective NEMA guideline meets. Ratings between the two standards are not.

40050-9 extended the newer IEC 60529 rating system with an IP69K rating for high-pressure, high-temperature wash-down applications.Enclosures conforming with ISO 20653:2013 must be both dust-tight (IP6X) and able to withstand high-pressure and steam cleaning.

• • – IK code on resistance to mechanical impacts• • for military equivalents

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