Mitsubishi MR-J4-40B-RJ Description Description Mitsubishi Digital AC-Servo Amplifier MR-J4-B, for Motor Power 400 W, RJ type Related products MITSUBISHI FX0-20MR-ES MITSUBISHI FX1N-40MR-DS MITSUBISHI MR-J2-40A Mitsubishi FX2N-48ET-ESS/UL MITSUBISHI E1071 Mitsubishi FX2N-32ER-ES/UL