Tutco RMC remote control panel for 3phase in-duct heaters. 
Model RMC1-16-14-8.5-1-1-480-24.
 Supply volts - 480, 3 ph. 4.75 KW, 5.7A.
For heater model DHD33774-4.75-3ph.
 Stainless steel enclosure 14x16x 8.5"
Comes with instructions, VT7225 thermostat and Tasseron THTDFA04 Duct Mount Temperature Sensor
Never installed