Mitsubishi MR-J4-40B-RJ020 Description Description Mitsubishi Digital AC-Servo Amplifier MR-J4-B, for Motor Power 400 W, MR-J2S comp. Related products MITSUBISHI A1ADP-SP MITSUBISHI A2NCPU MITSUBISHI FR-A540-0.75K-EC Mitsubishi FX0N-65EC Mitsubishi FX2N-32ET-ESS/UL MITSUBISHI FX0-20MR-ES