Quick Learn: What is a contactor?

A quick overview of electrical contactors and their operation.

An electrical contactor is a switching device,  widely used for the switching of motors, capacitors (for power factor correction) and lights.

A contactor consists of an electromagnet, a set of power contacts and a spring enclosed inside an enclosure.

When an excitation voltage is applied to its coil, it turns into and electromagnet and pulls the contacts towards it and thereby closing the power contacts.

Know everything about contactors by reading the article.