Wiring Method for SelfLocking Control Circuit https://www.bestcontactor.com/wiringmethodforselflockingcontrolcircuit/ The core principle of a selflocking #control circuit (also called selfholding circuit) is to use the normally open #auxiliary contact of a control component (#contactor/intermediate #relay) and connect it in parallel with the start #button, so as to realize the function that the coil of the control component remains energized after the start button is released. Combined with comm