What Is NEMA 4X?

eHow may earn compensation through affiliate links in this story. Learn more about our affiliate and product review process here.
Electrical component enclosures offer different types of protection against the elements.
Image Credit: Francesco Scatena/iStock/Getty Images

NEMA is an acronym for National Electrical Manufacturers Association. This organization gives electrical component enclosures ratings -- such as NEMA 4X -- based on their protective qualities. NEMA ratings specify whether an electrical component enclosure is safe for outdoor use, and what type of environmental conditions it can withstand.



Video of the Day

Like electrical component enclosures with the NEMA 4 designation, enclosures with the NEMA 4X designation are safe to use indoor or outdoors.

Video of the Day


Electrical component enclosures with a NEMA 4X designation provide protection against falling dirt, rain, sleet, snow, windblown dust, splashing water, hose-directed water and corrosion, according to Cornerstone Automation Systems, Inc. Furthermore, external formation of ice on enclosures with a NEMA 4X designation will not cause damage.


NEMA 4 vs. NEMA 4X

The only difference between NEMA 4 and NEMA 4X enclosures is that NEMA 4X enclosures offer corrosion resistance.



Report an Issue

screenshot of the current page

Screenshot loading...