Enclosure Protection Ratings & Standards

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All Enclosure Rating Types

Ratings and criteria indicate safety and security. Electrical cabinet enclosures are evaluated based on their appropriateness for certain applications and the level of equipment protection they provide. Each form of enclosure is assigned a rating depending on its capacity to resist environmental conditions. Our ratings include:

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Why Enclosures Have NEMA And IP Ratings

“Waterproof” and “sealed” are ambiguous. They're not useful for enclosure selection. Design engineers must know “exactly how waterproof?” Is the enclosure for dripping water or full submersion? Designers must protect their electronic and electrical components from moisture, dust, and other pollutants.

That’s why electrical enclosures are rated based on their ability to withstand a varying degree of environmental elements, including dust, water, and ice. 

The enclosure maker should give testing results upon request to prove a rating. Because testing takes time and money, manufacturers don't usually employ NEMA and IP ratings for enclosures. Understanding rating systems allows you to confidently say that a NEMA-rated enclosure provides equal protection to an IP-rated enclosure and vice versa.

IP Enclosure Ratings Chart

IP说明
IP44防止直径大于 1 毫米的固体颗粒进入封闭设备。
IP54通常用作交通控制柜，因为它们能够保护电气设备免受溅水或雨水的影响。
IP55抗风雨外壳，具有一定程度的防风尘和防水功能。
IP563R 机柜的设计与 NEMA 3 机柜非常相似，但 3R 机柜可以通风。
IP57由于其出色的耐候性，通常被称为防雨外壳。
IP65一般使用 304 和 316 不锈钢制造，以防止腐蚀性材料的侵蚀。
IP66无冲孔的防尘外壳。
IP67在水深 15 厘米至 1 米处临时浸泡 30 分钟，可防止水损坏。
IP68在 1.5 米深的水中浸泡 30 分钟后，它还能防止水渍。

NEMA Enclosure Ratings Chart

NEMA说明
NEMA 1General-purpose enclosures are typically manufactured to protect live parts.
NEMA 2Offer the same level of protection as NEMA 1, but NEMA 2 enclosures are drip-tight.
NEMA 3抗风雨外壳，具有一定程度的防风尘和防水功能。
NEMA 3R3R 机柜的设计与 NEMA 3 机柜非常相似，但 3R 机柜可以通风。
NEMA 4Often called rain-tight enclosures due to their excellent weather resistance.
NEMA 4x一般使用 304 和 316 不锈钢制造，以防止腐蚀性材料的侵蚀。
NEMA 5一般使用 304 和 316 不锈钢制造，以防止腐蚀性材料的侵蚀。
NEMA 6一般使用 304 和 316 不锈钢制造，以防止腐蚀性材料的侵蚀。
NEMA 12Dust-tight enclosures that are constructed without punch-outs.
NEMA 13Built for indoor industrial applications that require protection from dust, lint, splashing oil, and non-corrosive liquids.

All Enclosure Rating Types

NEMA 机柜

NEMA 机柜

IP 机柜

IP 机柜

NEMA And IP Enclosure Protection Ratings FAQs

1.What is the difference between NEMA and IP rating?

An IP rating solely evaluates protection against the entrance of solid foreign objects and water, whereas NEMA ratings take into account corrosion and structural details. A NEMA type can be compared to an IP rating, but the reverse is not true. The comparison between NEMA and IP inclosure ratings is merely approximative.

阅读更多 NEMA 与 IP 等级：区别是什么？

 
2.Is NEMA the same as IP?

While NEMA and IP ratings are not the same, they are quite comparable and may sometimes be used interchangeably for evaluating enclosures for industrial situations. IP ratings are primarily concerned with protecting against the intrusion of solid foreign objects or liquids, whereas NEMA ratings also address additional circumstances, such as the presence of corrosive substances.

3.Is NEMA 4X the same as IP65?

In general, an IP65 enclosure and a NEMA 4 enclosure offer essentially equivalent levels of protection. The primary difference between the two is corrosion prevention. Because IP enclosures are not certified for corrosion protection, a NEMA 4X enclosure is essential for applications requiring corrosion resistance.