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Ingress Protection Rating  

Ingress Protection (IP) ratings are developed by the European Committee for Electro Technical Standardization (CENELEC) (NEMA IEC 60529 Degrees of Protection Provided by Enclosures - IP Code), specifying the environmental protection the enclosure provides. Formally speaking, "IP" can be followed by one, two, or three numbers where the second number is for water resistance.   An X can be substituted for the first number (collision or bump resistance) if it is not available.  In practice, sometimes the first number is omitted entirely and so the only number shown is for water resistance.

  Format:   IPnn,  IPXn,  IPnnn
          (e.g. IPX4, IP54, IP-4 would all mean a level 4 water resistance.)


  Description:

0 No protection
1 Protected against vertically falling drops of water e.g. condensation
2 Protected against direct sprays of water up to 15o from the vertical
3 Protected against splashes and direct sprays of water up to 60o from the vertical
4 Protected against low pressure water sprayed from all directions
5 Protected against moderate pressure jets of water from all directions
6 Protected against temporary flooding of water
7 Protected against the effect of immersion between 15 cm and 1 m
8 Protected against long periods of immersion under pressure
For example:  In a food preparation area, a dryer with an IP rating of IPX5 would be recommended if santary regulations require mandatory disinfection followed by spray-down with water.   An IP rating of IPX4 would be advisable for a hand dryer located in proximity to a shower enclosure.


Some popular dryers with published IP ratings:

LEVEL 5
     The Dyson Airblade AB14 has an IP35 rating which is the highest (level 5) that we've seen in a hand dryer.

LEVEL 4
     The World Dryer VERDEdri and SMARTdri, have an IP24 rating which is also excellent.
     The Saniflow Duraflow Plus has a rating of IPX4.
     The Dyson Airblade AB12 has an IP34 rating (level 4) as well.

LEVEL 3
    All Excel Xlerators have an IPX3 rating.
    The World Dryer VMax has an IP33 rating.
    The Bradley Aerix+ 2921 has an IP33 rating.