Electric Motor Control Basics - Book - Page 84
NEMA vs IEC Motor Controls
Mechanical and electrical, industrial applications must be tested for safety before their
release into the market. The Ingress Protection mark differs from one rating company
to the other. However, the two primary outstanding standards are by NEMA and IEC.
NEMA standards have been more popular than the IEC one. Currently, they’re
becoming more acceptable in the global market, especially for compact devices. IECrated devices are less expensive than NEMA-rated ones.
When choosing between NEMA and IEC rated-devices, it’s essential to understand
what the rating represents. The industry has made efforts to standardize the ratings;
hence, you shouldn’t expect any impactful differences.
One key aspect of the ratings is that they’ve helped eliminate vagueness in some
commonly used terms like “waterproof.” The ratings give you a clear explanation of
what you can expect with each device. If you’ve got challenges interpreting the ratings
depending on a devices application, seek professional help.
Part 1, Contactors
Basics: Part 2,
Basics: Part 3,
The Benefits of Type E/F
Basic Pump Control:
Three Phase DOL Starter
Control of an Electric Pump
Applying Motor Control
in a Wastewater
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NEMA vs IEC Motor