IP Rated Enclosures Explained

What is an IP rating?

IP (or "Ingress Protection") ratings are defined in international standard EN 60529 (British BS EN 60529:1992, European IEC 60509:1989). They are used to define levels of sealing effectiveness of electrical enclosures against intrusion from foreign bodies (tools, dirt etc) and moisture.

What do the numbers in an IP Rating mean?

The numbers that follow IP each have a specific meaning. The first indicates the degree of protection (of people) from moving parts, as well as the protection of enclosed equipment from foreign bodies. The second defines the protection level that the enclosure enjoys from various forms of moisture (drips, sprays, submersion etc). The tables below should help make sense of it:

IP Ratings - what they mean.
IP Rated Enclosures - quick find chart

A number replaced by x indicates that the enclosure is not rated for that spec.
First Digit (intrusion protection)
0No special protection
1Protection from a large part of the body such as a hand (but no protection from deliberate access); from solid objects greater than 50mm in diameter.
2Protection against fingers or other object not greater than 80mm in length and 12mm in diameter.
3Protection from entry by tools, wires etc, with a diameter of 2.5 mm or more.
4Protection against solid bodies larger than 1mm (eg fine tools/small etc).
5Protected against dust that may harm equipment.
6Totally dust tight.
Second Digit (moisture protection)
0No protection.
1Protection against condensation.
2Protection against water droplets deflected up to 15° from vertical
3Protected against spray up to 60° from vertical.
4Protected against water spray from all directions.
5Protection against low pressure water jets (all directions)
6Protection against string water jets and waves.
7Protected against temporary immersion.
8Protected against prolonged effects of immersion under pressure.

Our range

While we cover a huge range of electrical enclosures, our most common IP ratings are probably 65, 66, 67 and 68. So for quick reference, these are defined below:

We are currently redeveloping our website to help you find the products that suit you. Our entire range is not currently reflected on this site, if you don't find the enclosure you're looking for, please call us on +44(0)1932 230 123 so that we can find exactly the right product for you!

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