How do you choose the right motor starter?

摘要

Not long ago, choosing the best type of starter to use in a control panel was easy, mostly because there was almost no choice! Now, however, there's an almost bewildering array of options. Moeller Electric's Steve Rickard looks at the most useful of these, and explains how to choose the best starter for the job. A traditional motor starter for use in a control panel is made up of three fuses, a contactor and an overload with, of course, variations on this theme for reversing, star-delta and other more specialised starter types. Starters based on this apparently simple arrangement are, in fact, still widely used, even in new equipment.