VFD • Motor Controls • Enclosures
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About Wistex


Located just outside of Philadelphia, PA and founded over 45 years ago, Wistex is an electrical distributorship and service agency specializing in variable speed drives and controls. What sets Wistex apart from our competitors is our product knowledge and superior customer support. We provide solutions that provide money savings and longevity to your electrical systems.

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What Are the Differences Between NEMA and IP Ratings?

When it comes to enclosures, NEMA and IP standards are the ratings that govern safety and efficiency in performance, durability, and reliability of electrical enclosures. But what is the difference between these NEMA and IP ratings? Can one be used as a substitute for another?

NEMA Ratings The National Electrical Manufacturer Association has a set of standards for enclosure manufacturing and use in various environmental conditions. The NEMA rating includes specifications for...

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