... , R448, R449 Technical Data:The R250 is an analogic Automatic Voltage Regulator with transistor.Applications Alternators LSA 42.2, 43.2, 44 ... of ± 20%.Voltage setting P1.Stability setting P2.Supply protected with an 8 A fuse, slow action (supports10 A for 10 ... .V.R. OptionGradual voltage return functionWe can supply the following Automatic Voltage Regulator: Leroy Somer AVR; R230, R250, R438, R448, R449 ...