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What does the U suffix mean at the end of an ATV AC drive part number such as ATV66D79N4U?

It means the literature provided with the AC drive will be United States English. The U suffix was used at the end of the complete part numbers for the ATV11, ATV16, ATV18, ATV28, ATV56, ATV66 and ATV58 AC drives when they were ordered for use in the United States.

CTA-ID : 6913
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