How to choose the SVTA power controller for a transformer?

SVTA range is designed for tranformer control. The starting ramp must be adapted to the load (of the transformer) to avoid current pulse. In the worst case with a full conduction switch ON, the current can increase up to 30*In, in your case, the SVTA4694 will support this current pulse according to Non-repetitive peak overload current, but the margin of safety with this thyristor rating is not very important. Regards

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