Warner Electric model MCS-153-3 industrial clutch control, unused in box

Model MCS-153-3 industrial clutch made by Warner Electric.  This is rated for either 120 VAC or 220/240 VAC input and 90 VDC output. It measures about 6.5" x 4.5" x 5". This clutch control is still in the original box with the installation and operations insert. We don't think that it has ever been used, but the box is faded and worn from storage.