The Large Case DC Power300 Amp SPX series high output alternator is a component of a next generation high efficiency, severe duty charging system specifically engineered for DC Power Engineering. This system consists of a 300 Amp alternator and internal regulator. The alternator produces a maximum of 300 amps and will produce a minimum of 195 amps continually at low idle speeds and maximum output above 1800 engine RPM. The alternator has a maximum efficiency in excess of 75 percent. The rectifier is mounted onboard the alternator and consists of 12 75 amp press fit bosch diodes. The brush holder assembly and slip ring are environmentally protected and the bearings are heavy-duty, oversized premium bearings. The alternator housings are precision-machined cast aluminum and all components are of OEM quality. All major components being carefully chosen for maximum performance and reliability.