What is a Contactor?
A contactor is an electrically controlled switch used for switching a power circuit, similar to a relay except with higher current ratings. A contactor is controlled by a circuit which has a much lower power level than the switched circuit. Contactors are often used for 150 Hp motor.
Magnetic contactor is a device or switch which operate magnetically and close or open the electric circuit. EasyEDA: Ideas for Circuit Design, Innovation for Electronics Access
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