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What is the largest S811+ with Inside-the-Delta Mains configurationi?

The largest unit is an S811+V10P3S soft starter that is able to be configured for Inside-the-Delta operation. This corresponds to a maximum motor nameplate FLA of 1732 amps when the S811+V10 is configured in such a fashion.

Inside the Delta motor wiring configurations are excellent for converting large motor applications presently using a wye-delta starting method.