Resistive discharge magnet controller with a 20-100 amp range at 230VDC, contactors operate at 230VDC control voltage, lift/drop interlock prevents resistor bank overloading. Separate resistor bank compartment prevents damage to front wiring and components. This model succeeds and fits in place of the RD1W. 17-3/4" W x 22-3/8"H x 18-3/8"D. Enclosure NEMA 1.