Description
Product details
A contactor is an electrically controlled switch used for switching an electrical power circuit. A contactor is typically controlled by a circuit which has a much lower power level than the switched circuit, such as a 24-volt coil electromagnet controlling a 230-volt motor switch. A contactor is an electrically controlled switching device, designed for repeatedly opening and closing a circuit. Contactors tend to be used for higher current-carrying applications than standard relays, which do a similar job with low current switching. Working Principle of Contactors A large amount of current is drawn initially by an electromagnetic coil. The moving contact is pushed forward by moving core, as a result, the force created by the electromagnet holds the moving and fixed contacts together. What is the difference between auxiliary contactor and power contactor? In contrast to the main power contactor coils rated for continuous duty throughout an entire plant, auxiliary contactors have time delay features that prevent arcing and possible damage if the auxiliary contactor opens while the main contractor is still energized.
