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    Identifying mechanically held contactor versus electrically held contactor

    Issue:
    How to tell whether lighting contactor is mechaniclly held or electrically held

    Product Line:
    8903 Lighting ontactors

    Environment:
    Products sold and used in the United States

    Cause:
    Catalog numbers are not always known and visual identification must be performed.
     
    Resolution:
    Electrically held contactors have a single coil which is continuously energized to engage the power contacts.  Mechanically held contactors have two different coils, a latching coil and an unlatching coil.  These coils are only momentarily energized to engage or disengage the power contacts.

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