On 6/18/2018 1:17 AM, Bill wrote:
....


Please excuse my ignorance.Â* I've seen that word over and
over-"heaters".Â* Is that slang for capacitors?

No, they're the fusible links that serve as overcurrent protection.

When you re-purpose a 3P controller for single phase, current draw will
be higher by the factor of phases * Voltage for same size motor so the
overcurrent protection has to match.

http://www.southlandelectrical.com/FurnasHeaterChart.asp
https://motorsandcontrol.com/siemens-furnas-e54-bi-metal-heater-element-for-siemens-furnas-overload/

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