The 600 series alternators have several mounting styles available, 7"custom hinge, 4" J180 and rail mount. The C656 14 volt alternator is capable of producing 400 amps (225 at idle). This frame size is also available in 28 volts with the C653 producing 260 amps. C.E. Niehoff & Co. produces alternators with a voltage range from 14 to 700 volts and amperage output between 30 and 570 amps.