IP and NEMA ratings both measure the same thing: an enclosure’s ability to withstand the ingress of dust or water. This matters because watertightness is not a binary concept: housings are not simply waterproof/not waterproof.
Varying degrees of pressure play a huge part in how well your enclosures will cope with exposure to water or dust. A splashproof enclosure will not resist prolonged immersion. And a fully submersible enclosure may not cope with high-pressure water jets.
So it’s crucial to specify the correct IP or NEMA rating for your industrial electronic enclosures. But this can be confusing because the two systems use different variables. And the numerical ratings do not correlate in the way you’d expect!
Here are some examples:
Yes, it is possible to compare and cross-reference ratings – but it’s crucial to specify your ingress protection requirements as accurately as possible. And for this you’ll need to examine the two rating systems in detail.
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