Made of high-quality materials, sturdy and 6GA2-491-1A generator is a half-wave phase controlled thyristor type Automatic Voltage Regulator and forms part of the excitation system for a brushless generator Easy to use AVR 6GA2-491-1A AVR 6GA2 491-1A Automatic Voltage Regulator For 1FC6 Series Generator Alternator Genset Volt Regulation 6GA2-491-1A 6GA24911A, Weight: 560.0 pounds, Manufacturer: IJSDNVJNDX