... 3.factory direct price 4.M40FA640A in stock Marelli AVR M40FA640A Marelli AVR M40FA640A for generator is suitable for synchronous generator of ... Ω (min)-20Ω (max) We also supply following products:1. CF Brushless AVR: CF-8A, CF-12A, CF-15A,SAVRH-75A, SAVRH-PCB ... , SAVRL-75A, SAVRL-PCB.2. Stamford AVR: AS440, MX321, MX321-A, MX341,MX341-A, SX440, SX440-A ...