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Sparton - Hudson New Hampshire - CNC Machining - Sheet metal fabrication
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custom nema enclosures

NEMA 4 and NEMA 4X Enclosures

Standard sparton designed NEMA 4 enclosure in bright zinc finish with JIC latches

Totally custom NEMA 4X enclosure made from 316 grade stainless steel, passivated, and finished in a white powder coat Complete custom large enclosure designed with complete customer collaboration to provide two NEMA 4X compartments for the U.S. Department of Homeland Security

Sparton designs and fabricates sheet metal enclosures to meet NEMA type 4 and NEMA type 4x requirements. We offer our own standard enclosure lines that we can fully customize by including your features and cut-outs as we fabriate your enclosures. Sparton offers full sheet metal fabrication and precision maching services to manufacture an enclosure from your drawings or any other parts as well.

Please note, that if we are manufacturing to your drawings or models, you take on the responsibility and liability to make sure your design can meet the NEMA requirements. We make the same disclaimer for any features you wish to add to our factory certified enclosure designs.

To Make Custom Enclosures or Modify Off The Shelf Enclosures?
Sparton manufactures & modifies electrical enclosures at competitive prices.  Often, clients are not sure whether they should have custom enclosures made or just modify stock enclosures.  Generally the big factors are cost and lead time.
When you should modify an existing enclosure
It might be cost effective to modify if you only need a few enclosures (less than five) and want to modify only a couple of sides of an otherwise acceptable off the shelf enclosure.
It is generally more cost effective to manufacture custom enclosures if you:
  • Would need at least two sides customized
  • Require more than five enclosures
  • Can design your own enclosure - If you can't, we can do it for you.
  • Plan to reorder the same enclosure (or very similar) in the future
  • Want custom colors and silk screening
  • Can't find exactly what you want "off the shelf" from the large box manufacturers
  • Want to eliminate the hassle of buying from one vendor and having a third party modify your boxes

As more of the above reasons apply to your project, the more advantageous it is for you to have enclosures manufactured for you, with your custom features already designed in from the start. Some customers just want a totally customized look for their product that an off the shelf rectangular box just can't give them. To see some of our totally custom NEMA enclosures, go to our project gallery.

Custom Manufactured Enclosures

All of our enclosures are made from fabricated sheet metal, and are custom made to order. We generally use steel, 5052 aluminum, 304 SST or 316 SST, depending upon the nema requirement for your application. Other materials are available upon request, such as naval grade 5086 aluminum sheet.

Our most popular enclosures are NEMA 4 and NEMA 4x, constructed of welded 304 SST with a brushed finish.

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.

For more information about Sparton enclosures, email your requirements to our sales staff. To expedite our quoting process, please download and print out our custom NEMA enclosure RFQ form, then complete the form and fax it to us at (603) 883-3400. If we are able to have the form in hand before your call, we can ask you fewer questions and filling out the form will force you to think about many more aspects of your design.

©2003 Sparton Technology Company - Hudson, NH
Phone: (603) 880-3692 Fax: (603) 883-3400