—100% Brand New Genuine Original Product —Fast Shipping from USA —Low Price —Discount For Bulk Purchases Available —Quality Tested Satisfaction Guaranteed —Made in USA — [DOWNLOAD CATALOG Marathon PM500 AVR] (https://www.jovalindustrial.com/wp-content/uploads/2016/11/PM500-Catalog-AVR-Automatic-Voltage-Regulator.pdf) — [DOWNLOAD MANUAL Marathon PM500 AVR] (https://www.jovalindustrial.com/wp-content/uploads/2016/11/PM500-Manual-AVR-Automatic-Voltage-Regulator.pdf) GENERAL The marathon PM500 voltage regulator is a versatile AVR with its large voltage sensing ranging from 175-600vac, 1 or 3 phase. This is designed for PMG excitation systems to allow the extra 300% short circuit motor starting capability but can be also used in systems where the PMG is not available like shunt types.