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        Ingress Protection Requirements of Electrical Enclosures

        2025-08-01

        IP Code testing is another name for IEC 60529 ingress protection testing. The main focus of the testing is how well an enclosure blocks liquids and solids. The IP Code consists of two digits together. The degree of protection from solid objects is indicated by the first number. Protection ratings, such as those for dust protection, may be included in this.

        The second figure represents the level of liquid protection. Here is a chart that displays the IP Code rankings.

        IP Rating

        Size of Object Protected Against

        Examples of Objects Protected Against

        IP 0X

        No protection

        None

        IP 1X

        > 50 mm

        Large surface of body, but not deliberate contact (back of hand vs finger)

        IP 2X

        > 12.5 mm

        Smaller objects and fingers

        IP 3X

        > 2.5 mm

        Thick wires or tools

        IP 4X

        > 1 mm

        Screws, nails, wires

        IP 5X

        Dust protected

        Some dust may enter, but cannot interfere with operation

        IP 6X

        Dust tight

        No ingress of dust at all

        The amount of ingress protection is specified in the NEMA 250 test standard. It also discusses the minimal specifications for enclosure design. Determining protection against solids and liquids is part of the electrical enclosure testing process, which pertains to the level of ingress protection.

        Unlike IEC 60529, which provides an IP Code rating, NEMA 205 testing provides an enclosure rating. For national electrical manufacturers, this ranking is significant. It details the certification, testing, and NEMA type. The enclosure ratings and the corresponding protective needs are displayed in the chart below.

        Type

        Solid

        Liquid

        Type 1

        Falling dirt

        No protection

        Type 2

        Falling dirt

        Dripping and light splashing water

        Type 5

        Falling dirt, settling airborne dust, fibers, flyings and lint

        Dripping and light splashing water

        Type 12

        Falling dirt, circulating dust, fibers, flyings and lint

        Dripping and light splashing water; seepage and light splashing of oil and non-corrosive coolants

        Type 13

        Falling dirt, circulating dust, fibers, flyings and lint

        Dripping and light splashing water; seepage, light splashing and spraying of oil and non-corrosive coolants

        Type 3

        Windblown dust and falling dirt

        Water from sleet, snow and windblown rain

        Type 3R

        Falling dirt

        Water from falling rain, sleet and snow

        Type 4

        Windblown dust and falling dirt

        Water directed from a hose or from rain, sleet, snow and splashing water

        Type 4X

        Windblown dust and falling dirt

        Water directed from a hose or from rain, sleet, snow and splashing water; increased corrosion protection

        Type 6

        Falling dirt

        Hose directed water and submersion that is temporary and at a limited depth

        Type 6P

        Falling dirt

        Hose directed water and submersion that is prolonged and at a limited depth

        Note that NEMA 250 Types 1, 2, 5, 12, and 13 are exclusively intended for indoor use. Every other variety is both indoors and outside. For marketing purposes, the NEMA electrical enclosure rating is frequently utilized. For many applications, cases with electrical enclosure certification and that pass the electrical enclosure water test are necessary.

        Comparable to NEMA 250, UL 50 specifies protection levels and design requirements. In essence, it's an IP code for an electrical casing. The levels of protection from liquids and solids for each type of enclosure are listed in the chart below.

        Type

        Solid

        Liquid

        Type 1

        Falling dirt

        No protection

        Type 2

        Falling dirt

        Dripping and light splashing water

        Type 5

        Falling dirt, settling airborne dust, fibers, flyings and lint

        Dripping and light splashing water

        Type 12

        Falling dirt, circulating dust, fibers, flyings and lint

        Dripping and light splashing water; seepage and light splashing of oil and non-corrosive coolants

        Type 13

        Falling dirt, circulating dust, fibers, flyings and lint

        Dripping and light splashing water; seepage, light splashing and spraying of oil and non-corrosive coolants

        Type 3

        Windblown dust and falling dirt

        Water from sleet, snow and windblown rain

        Type 3R

        Falling dirt

        Water from falling rain, sleet and snow

        Type 4

        Windblown dust and falling dirt

        Water directed from a hose or from rain, sleet, snow and splashing water

        Type 4X

        Windblown dust and falling dirt

        Water directed from a hose or from rain, sleet, snow and splashing water; increased corrosion protection

        Type 6

        Falling dirt

        Hose directed water and submersion that is temporary and at a limited depth

        Type 6P

        Falling dirt

        Hose directed water and submersion that is prolonged and at a limited depth

        SHENZHEN BONAD INSTRUMENT CO.,LTD, is a high-tech company in China, BONAD quality system has been strictly certified by ISO9001:2015. As a CIE Membership.Our main products are Test Equipment, Electrical Safety Tester, Environmental Chamber, Temperature Chamber, Climate Chamber, Thermal Chamber, Salt Spray Test, Dust Test Chamber, Waterproof Test, accessibility test probe and test finger, Glow Wire Test and Needle Flame Test,freezing load test package, soil moisture sensor, all kinds of gauges and so on.

        BONAD have gathered lots of experienced researchers and administrators on this field. BONAD products are manufactured strictly in accordance with various EN, IEC, CE, UL, VDE, VS, JIS, ISO, CEE, BS, FMV, GB and other similar international standards. All products can pass CE certificate and authenticated by the third party lab.

        Please feel free to contact us if you need any support.

        sales Dep:Alice@https://cztsjt.com,

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