Custom Manufactured NEMA 6 and 6P Enclosures
Custom enclosures are generally not offered. However, there are material options available.
Material Options
Our standard NEMA 6 and 6P enclosures are constructed from 304 stainless steel. However, we can upgrade your enclosure to type 316 Stainless. Aluminum is only available in limited applications, and we have stopped offering this material as a standard option.
Please keep in mind that the more custom your enclosure is the more the cost is driven up, both by design and fabrication time. Because your enclosures are totally built in a "make to order" batch style, the price is very dependent on how many enclosures are built together to offset the set-up time of each operation.
We are interested in hearing about all enclosure opportunities, but be advised that NEMA 6 and NEMA 6P enclosures cost more to fabricate than your typical NEMA 3, 3R, 4, or 4X enclosure that most people are familiar with purchasing. They are very different and require much more labor intensive fabrication processes.
Why are NEMA 6 and 6P Enclosures significantly more expensive than standard 4x enclosures?
This is fairly straight forward. The answer is simply volume, and a very significant difference in testing requiremnets. The following table illustrates some of the differences.
NEMA 4, 4X vs NEMA 6 & 6P
| Cost Drivers |
NEMA 4 |
NEMA 4X |
NEMA 6 or 6P |
| Enclosure Material |
Least expensive, thin gage steel |
Needs corrosion resistance (think rust). Generally thin gage stainless steel |
Needs corrosion resistance and must be very durable to withstand increased pressure, as submerged in water. Generally heavier gage stainless steel |
| Gasket Material |
Seamed polymer strips or formed in place gasket
(Inexpensive) |
Seamed polymer strips or formed in place gasket
(Inexpensive) |
One piece (not seamed), thick gasket, generally silicone.
(Expensive) |
| Volume |
Manufactured by countless companies in high volume, driving cost down |
Manufactured by countless companies in high volume, driving cost down |
Specialty Product produced in low volume, driving the cust up. Only two to three companies in North America manufacturing compliant enclosures. |
| Testing |
Standard time proven designs requiring limited testing
(Inexpensive) |
Standard time proven designs requiring limited testing
(Inexpensive) |
Extensive testing of each enclosure is critical. Issues such as porossity in the weld seams, bad gasket seal
(Very Expensive) |
Let Sparton Manufacture Your Project
Do you have other brackets or parts to be fabricated for your project? Streamline your purchasing by having us quote those along with the enclosure. Often we manufacture the enclosures along with other sheet metal and machined components for customers. We can be your one stop shop for your mechanical requirements including integration. |