Menu Close

Electrical Enclosures: What is NEMA 6 and 6P?

NEMA 6 and 6P Definition with General Reference Applications 

NEMACO technology offers submersible NEMA 6P electrical enclosures made from premium stainless-steel box used to protect electronic controls for a power plant or any offshore facility. To add, NEMACO submersible NEMA 6P are also used to protect security systems for any applications that require the indoor/outdoor use and gives the equipment protection foreign substances such as dust, and water.  

NEMACO NEMA 6 & 6P Electrical Enclosures Key Features: 

  • Industry Standard NEMA 6, 6P (IP67, IP68) Rated Enclosures 
  • Performance Rated Enclosures to 150 FT Submersion 
  • UL Compliance & Performance Testing services are available 
  • N6/N6P Enclosures Sizes from 4″x4″x4″ to 72″x48″x24″ 
  • Custom Electrical Conduit Hubs & Pipe Flanges available 
  • Heavy Duty, Corrosion Resistant Stainless Steel (grades 304 & 316) 
  • Powder coated, Light Weight & Strong Aluminum Alloys (5052, etc) 
  • Tough Marine Epoxy Coatings available for speciality applications 

NEMA 6 & 6P Sample Applications 

A usual example of submersible NEMA 6P electrical enclosure is made from stainless steel box and it is used to protect electronic controls for a power plant or offshore facility. In addition to this, the submersible NEMA 6P is used for security systems that are used indoors or outdoors depending on the application. Security systems need more protection from water ingress. NEMA 6P enclosures are more expensive because it is made from stainless steel and the cost that it would take to manufacture it is high – including the skill of the craftsman in making this enclosure. 

NEMA 6 & 6P Enclosure Materials 

Carbon Steel 

Carbon steel compared to other raw material steels has a higher carbon content, including iron and manganese. Carbon steel as an electrical enclosure material is considered to be one of the widely and known used material steel because compared to other steels available, it has many functions and advantages that includes in its efficiency. Carbon steel is malleable, therefore it can be melted and can be turned into different specific shapes. 

There are generally four types of carbon steel according to these categories: low or mild steel, medium steel, high steel, and ultra high steel. 

Low steel contains lower content of carbon among all other types of carbon steel. This type of carbon steel is easier to form a shape and this is the most affordable compared to other types of metals. It is commonly used in manufacturing equipment for construction purposes. Despite the advantages, it has low strength and durability because of the lower carbon content. 

Medium steel is another type of carbon steel which is resistant to longer use or wear and tear. Compared to low steel, this is more durable and stronger. Medium steel is commonly used in producing large metal structures and automotive accessories such as axles, shafts, couplings and other materials applicable to this industry. 

High steel is one of the strongest carbon steel ever known because it has a high steel variety. It is generally used in producing high strength springs and wires. 

Ultra high steel is a carbon steel type which is very formal, but strongly recommended to use in manufacturing knives and axles. These types of carbon steel, metals are used in the production of various types of industrial tools and machines. Ultra high steel carbons are used extensively in producing different cutting tools, drill bits, and knives because these types of tools require strong but very flexible material. 


Aluminium performs well in harsh, high-temperature, demanding environments and that makes it a very suitable raw material for NEMA 3R enclosures. The types of enclosures needed for this harsh environment should be strong and durable – these are the characteristics found in aluminium. In addition to this, aluminium is lightweight and provides corrosion resistance to rainwater, hazardous fluids & compounds such as hydrogen sulfide, and high heat dissipation because of its exceptional heat conduction metal characteristic. 

Stainless Steel 

NEMACO produces electrical enclosures made from stainless steel, this metal is widely known for having tough, corrosion-resistant properties. Any application that requires enclosures to have good corrosion-resistant properties requires stainless steel enclosures. Our company has the capability to build custom-sized stainless steel electrical enclosures or you can always choose our standard sizes. 

NEMA 6 Application 

NEMA 6 electrical enclosures are commonly made from the following metals: aluminium, stainless steel, plastic, fibreglass (FRP) and other non-corrosive, water-resistant raw materials that provides specific protection for electrical equipment. However, there is an exception to this because NEMA 6 enclosures that are manufactured from carbon steel requires extra protective coating because this material is susceptible to steel corrosion (rust), unlike stainless steel. With that being said, NEMA 6 carbon steel enclosures can only be used for temporary applications where there is an exposure to water and other liquids that cannot cause oxidation resulting to metal rusting. NEMA 6 enclosures are commonly used in applications that call for the need to protect any equipment from temporary submersion in water.  

NEMA 6 Enclosures Limitations 

However, NEMA 6 cannot be submerged to rainwater, high-acid fluids, any oils or flammable liquid material with this limitation. An example of its application is if there is any use that requires a wash down for cleaning for sanitary purposes or temporary exposure to rainwater.  

NEMA 6 Additional Accessories & Features 

NEMACO technology produces NEMA 6 electrical enclosures that are made from carbon steel, 304 & 316 stainless steel, and added with continuous hinges, mounting feet, stainless caster wheels and special fittings for any type of applications.  

NEMA 6P Application 

Our submersible NEMA 6P are generally used for any application where there is a need to submerge the enclosure to water. Any use or application of companies that require exposure to corrosive compounds such as salt water and caustic liquids that are used for sanitary applications, then the NEMA 6P stainless steel submersible enclosures would be a good fit for this use. Most of the industrial companies that require NEMA 6P prefers enclosures that are made from 304 and 316 stainless steels. For 316 stainless steel, this material is generally used for offshore platforms and naval applications.  

NEMA 6P Additional Accessories & Features 

Like NEMA 6 enclosures, we also offer stainless steel passivation for extra added corrosion protection. NEMA 6P is available in wide variety of sizes, from small wall mounts to two-door floor mount models. The customer should state and specify their quality needs for certain applications (temperature, seal resistance, depth submersion.)