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What does the Y mean at the end of the ATS48 part number?

Issue:
What does the Y mean at the end of the ATS48 part number?

Product Line:
All ATS48 Soft Starts

Environment:
Altistart 48

Cause:
N/A

Resolution:
ATS48 has a control supply and a power supply.

On  the Y range, you have a control supply that is 110-220 and the power supply is 208-690V. Y range is dedicated for the US market, with NEC standard soft starter that must be protected against the current unbalance.  Y range has three current sensors,. There are only 2 on the Q range (one more OLF on the Y range).

On Q range the control supply is 220-415V and the power supply is 230-415V.
 
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