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 A1SX81 MITSUBISHI FX0-20MR-ES MITSUBISHI A1ADP-SP MITSUBISHI FR-A540-22K MITSUBISHI MDS-A-SPJ-22 MITSUBISHI A3ACPUR21