Highlights- A contactor is a relay that is used for switching power.
- They usually handle hefty loads like electric motors, lighting, heating equipment, etc.
- Contactors are controlled by a circuit with much less power, even though their output is used to switch very high loads.
OverviewA Contactor is a mechanical switching device having only one position of rest, operated otherwise than by hand, capable of making, carrying, and breaking currents under normal circuit conditions including overload conditions - it cannot break short-circuit currents. A contactor's applications include controlling electric motors, thermal evaporators, lighting, capacitor banks, heating, and other electrical loads. Contactors range in size and capacity.
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