E I Core/ Contactor Magnet with Auto Stack is duly riveted and grinned with highly accurate grinders for electrical contactors. The E I Core/ Contactor Magnet is fitted with auto stack. The E I Core/ Contactor Magnet is available with DOL and oil immersed motor starters made from prime grade CRNGO silicon steel. E I Core/ Contactor Magnet with Auto Stack comes in various specifications to suit specific requirement.