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How do I size thermal units for an 8630 wye-delta starter?

Issue:
Selecting thermal units to protect the motor on an 8630 Wye-Delta starter

Product Line:
8630 Electromechanical Reduced Voltage Starters

Environment:
Products sold and used in the United States

Cause:
Selecting heaters to protect the motor on an 8630 Wye-Delta starter

Resolution:
You must divide the motor full load current by 1.73 and size the heaters per the appropriate chart. Check current Square D publications for thermal unit selection chart.


CTA-ID : 2009583 Wye-Delta Open Transition Closed Transition
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