@controlstrainer: Seal-In Circuit Fault: Why the Motor Stops When You Release Start The motor runs while Start is pressed, then stops when you let go. Start gives the contactor coil a temporary path, and the normally open auxiliary contact should close in parallel with Start to maintain it. Here the auxiliary contact fails to conduct while the wiring is intact, so releasing Start stops coil current and the contactor drops out. Check the holding contact as well as its wiring, and isolate the equipment before repair. Practice control circuits at controlstrainer.com #motorcontrol #controlcircuit #electrician #maintenancetechnician #ControlsTrainer

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Saturday 07 November 2026 17:00:00 GMT