Resistive discharge magnet controller with a 20-100 amp range at 230VDC, contactors operate at a reduced 24VDC control voltage, lift/drop interlock prevents resistor bank overloading. Integral latching relay works with two momentary normally open push buttons that are connected to a 24VDC 3 amp power supply. Heavy-Duty interchangeable parts. 17-3/4" W x 22-3/8"H x 18-3/8"D. Enclosure NEMA 1.