The modular NetSure™ 7100 Series power system with 3500 watt or 2000 watt rectifiers and DC to DC converters provides up to 12,000 amps of current for -48 volt systems with up to 520 amps at +24 volts or -58 volts. The basic components of the power system include the NetSure Control Unit (NCU), module mounting shelf assemblies which house the rectifiers and converters, and a modular distribution cabinet.