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:

Classificações do invólucro

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

IPDescrição
IP44Proteção do equipamento fechado contra a entrada de partículas sólidas com um diâmetro superior a 1 mm no interior do invólucro.
IP54Normalmente utilizados como armários de controlo de tráfego devido à sua capacidade de proteger o equipamento elétrico dos salpicos de água ou da chuva.
IP55Invólucros resistentes às intempéries que incluem um grau de proteção contra a poeira soprada pelo vento e a entrada de água.
IP56Concebidos de forma muito semelhante aos armários NEMA 3, no entanto, os armários 3R podem ser ventilados.
IP57Muitas vezes designados por invólucros estanques à chuva devido à sua excelente resistência às intempéries.
IP65Geralmente fabricados em aço inoxidável 304 e 316 devido à sua proteção contra materiais corrosivos.
IP66Caixas estanques ao pó construídas sem perfurações.
IP67Proteção contra danos causados pela água durante uma imersão temporária de 30 minutos a uma profundidade entre 15 cm e 1 m.
IP68Quando submerso até 1,5 m de água durante 30 minutos, protege contra danos causados pela água.

NEMA Enclosure Ratings Chart

NEMADescrição
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 3Invólucros resistentes às intempéries que incluem um grau de proteção contra a poeira soprada pelo vento e a entrada de água.
NEMA 3RConcebidos de forma muito semelhante aos armários NEMA 3, no entanto, os armários 3R podem ser ventilados.
NEMA 4Often called rain-tight enclosures due to their excellent weather resistance.
NEMA 4xGeralmente fabricados em aço inoxidável 304 e 316 devido à sua proteção contra materiais corrosivos.
NEMA 5Geralmente fabricados em aço inoxidável 304 e 316 devido à sua proteção contra materiais corrosivos.
NEMA 6Geralmente fabricados em aço inoxidável 304 e 316 devido à sua proteção contra materiais corrosivos.
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 Enclosures

NEMA Enclosures

IP Enclosures

IP Enclosures

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.

Leia mais: NEMA vs. IP Ratings: What Is The Difference?

 
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.