IP Ratings

For Enclosures and More

The IP rating (or International Protection Rating, sometimes refered to as Ingress Protection Rating) is made up by the letters IP followed by two digits. It is defined by IEC 60529 and classifies the degree of protection against the intrusion of a solid object (eg hands, fingers, screwdriver and dust) as the first numeral and protection against water as the second numeral.

IP ratings are often specified from projects and it is important to know that in general any IP rating higher than the one specified will be sufficient for the application. For example, if IP56 is specified you could use IP66, but not IP65 (as the 2nd numberal indicating water protection is too low).

For a full description of numeral means, see our IP Rating Chart (pdf).

B&R's industrial enclosures are rated at the following: -

• IP30 - An access probe of 2.5mm diameter shall not penetrate but no protection against water damage.
• IP42 - An access probe of 1.0mm diameter shall not penetrate and protected against sprays to 60°. Limited ingress permitted.
• IP54 - Limited ingress of dust permitted (no harmful deposit) and protected against water splashed from all directions. Limited ingress permitted.
• IP55 - Limited ingress of dust permitted (no harmful deposit) and protected against jets of water. Limited ingress permitted.
• IP56 - Limited ingress of dust permitted (no harmful deposit) and protected against strong jets of water. Limited ingress permitted.
• IP65 - Totally protected against the ingress of dust and protected against jets of water. Limited ingress permitted.
• IP66 - Totally protected against the ingress of dust and protected against strong jets of water. Limited ingress permitted.
• IP67 - Totally protected against the ingress of dust and protected against the effects of temporary immersion between 15cm and 1m.

B&R's Enclosures

As mentioned previously, a specification of an IP rating usually means that you can use that IP rating or higher (larger numbers).

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