Ingress Protection (IP) Marking

IP – This stands for the International Protection marking, or Ingress Protection marking a standard drawn up by the International Electrotechnical Commission (IEC). The IP Code reflects the degree of protection as "IP" followed by two numbers; the first digit shows the extent to which enclosures are protected against particles, and protection to others from enclosed hazards. The second digit indicates the extent of protection against water.
 

Various IP Ratings are as follows: -

IP44 Rating / IP44 Certification: The First digit (4) shows Protection against contact with live or moving parts inside the enclosure by tools, wires, or such objects of thickness greater than 1mm. Protection against ingress of small solid foreign bodies (diameter greater than 1mm) excluding the ventilation openings (intake and discharge of external fans) and the drain hole of enclosed machine, which may have degree 2 protection. The second digit indicates that water splashed against the enclosure from any direction shall have no harmful effect

IP54 Rating / IP54 Certification: Fist digit (5) shows complete protection against contact with live or moving parts inside the enclosure. Protection against harmful deposits of dust. The ingress of dust is not totally prevented, but cannot enter in an amount sufficient to interfere with satisfactory operation of the machine. Second digit (4) shows that Water projected by a nozzle against the enclosure from any direction shall have no harmful effect.

IP55 Rating / IP55 Certification: First digit (5) is already described above. The second digit (5) shows that water projected by a nozzle against the enclosure from any direction shall have no harmful effect

IP56 Rating / IP56 Certification: The first digit (5) is already described above. The second digit (6) shows that water from heavy seas or water projected from jets shall not enter the machine in any harmful quantity.

IP65 Rating / IP65 Certification: The first digit (6) shows complete protection against contact with live or moving parts inside the enclosure and against the ingress of dust. Meaning of second digit (5) already described above.

IP66 Rating / IP66 Certification: The first digit (6) & the second digit (6) both are described above

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