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Why does the load side of the shorting contactor connect to A2, B2 and C2 on the ATS48 soft start?

Published date: 27 June 2019

Issue:
Shorting contactor wiring

 Product Line:
 ATS48

Environment:
All models and serial numbers
 
Cause:
None
 
Resolution:
The A2, B2 and C2 terminals on the soft start provide a current path through internal current transformers.  This provides overload protection when the shorting contactor is enabled.
Refer to page 81 in the ATS48 Installation Guide for a wiring diagram. 

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