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Welcome,glad you are here.This is a new item,made for the USAF in 1955 ,stored in sealed mil-spec wrap and housing,and absolutely pristine.It is a rear connect CB.It comes equipped with an under-voltage trip,requiring a 48 volt source,ie a 10:1 transformer connected to the 480 volt line,through a 100 ohm resistor,supplied with the item.Instructions are included also.The motor and control operate from the line.In case of trip,it automatically moves to the reset position and is ready for (momentary contact) the close command.I have another one,still in the box,and will list it in the store if we can agree on a price.Thanks for coming by,Trudge.(save the price of the added contactor/starter)
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