Mitsubishi MR-J4-500B4 Description Description Mitsubishi Digital AC-Servo Amplifier MR-J4-B for Rated Motor Power up to 5000 W (400V) Related products MITSUBISHI FR-A540-22K Mitsubishi FX2N-32ER-ES/UL Mitsubishi FX0N-65EC Mitsubishi FX2N-16EYR-ES/UL MITSUBISHI FR-PU04 MITSUBISHI FX0-20MR-ES