Learning Tree: Contactors & Motor Starters – Overloads, Trip Class & Ratings | Control 2

How contactors work, main vs auxiliary contacts, arc suppression, shading coils, NEMA sizes vs IEC categories, overload relays, trip class and 125% setting (worked example), manual vs magnetic starters and 3-wire control. Ends with a 3-question quiz. Part of the Learning Tree engineering course.