What's the Difference Between a Contactor and a Relay?
https://springercontrols.com/news/understanding-the-difference-between-contactors-and-relays/
WEBNov 9, 2023 · Contactors are typically used for controlling electric motors, lighting circuits, and other high-power applications. Whereas relays are activated by an outside source, contactors have a built-in control system which can be activated from multiple sources such as a manual switch, voltage or current level.
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