commonly used on old bridge cranes + heavy lifting magnets.
Think the date code on the control coil is 9-87, the control coil runs off of 184-230VDC and reads 684 ohms,
the contact tips/all mechanisms/etc are all brand new Old stock and have never been used or installed, there is some shelf wear on the unit from it having been moved from place to place for over 30 years. I think the model tag reads U100A230XXLXXX