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Different Types of Electrical Enclosures
Saturday, February 23, 2019

Electrical enclosures might not seem too important. However, these boxes of metal/steel play a critical role in protecting electrical components in a variety of industries. As technology continues to grow at a rapid pace, electrical enclosures have become more important than before.

Choosing the right electrical enclosures can not only save lives but also millions of dollars in operating costs. Since electrical enclosures are available in many different types, the challenge is in knowing the type of electrical enclosure that’s right for your unique application. To help you out, we’ll discuss a few types of electrical enclosures that are commonly used today.

1. NEMA 1 Enclosures and NEMA 2 Enclosures

These enclosures are designed to be used indoors and offer less protection than any other NEMA rated electrical enclosure. These enclosures protect against light dirt, dust and contact with the hazardous electrical equipment. Despite providing limited protection, NEMA 1 electrical enclosures are widely used in a number of industries.

For spaces that are exposed to moisture in the atmosphere, NEMA 2 enclosures are recommended. The reason is that these enclosures offer protection against water droplets.

2. NEMA 3 Enclosures

These enclosures can be used both outdoors and indoors. However, most of the times, they’re used as outdoor enclosures. NEMA 3 enclosures offer protection against dirt, sleet, snow, ice and rain. While these enclosures aren’t suitable for harsh weather conditions, they are ideal for normal outdoor conditions.

3. NEMA 4 Enclosures

These electrical enclosures offer better protection against extreme weather conditions than a NEMA 3 enclosure. They’ve watertight features which is why they’re mostly used in industrial applications to protect outdoor wiring, mounted telecommunication equipment and power systems.

4. NEMA 4x Enclosures

These enclosures provide the same kind of protection as NEMA 4 enclosures but offer better protection to integral electrical components against corrosion. That is why these electrical boxes are often used in applications with corrosive chemicals or excessive moisture. Corrosion is a major issue in applications where there’s excessive moisture. NEMA 4x can protect sensitive electrical components from damage due to moisture and corrosion.

5. NEMA 6 Enclosures

NEMA 6 Enclosures are designed for both outdoor and indoor use. They’re mostly used in applications where temporary occasional submersion in water is likely. NEMA 6 enclosures are not only waterproof, but they also offer protection against external ice formation, ingress of water and falling dirt.

6. NEMA 6P Enclosures

NEMA 6P enclosures provide the same kind of protection as NEMA 6 electrical enclosures, but they allow prolonged submersion. Moreover, there’s an additional layer for protection against corrosion. NEMA 6P enclosures can withstand extreme environments and are usually used for housing electrical devices and instruments in remote caves and underground mines.

If you want to purchase a NEMA rated enclosure, please visit our product page. We have a large selection of NEMA rated enclosures.


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