Those look like capacitors out of a capacitor bank, used in 3 phase power systems to control the power factor. All of those wires would have gone to a bank of contactor switches that would switch portions of the capacitors on/off line as the power factor changed. The contactors would have been controlled by a little computer controller.
The capacitors are useful to others who may require replacements, so ebay is your friend here.
Jon.
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