The Mitsubishi MR-JE-300A+HG-SN302J-S100 pairs the MR-JE-_A servo amplifier with the HG-SN302J-S100 AC servo motor, rated for 3.0 kW output at 2000 r/min. The J suffix on the motor indicates an integrated oil seal, which keeps lubricant out of the motor windings in geared or direct-drive applications where gearbox oil mist is present. This combo is a matched set from the factory — the amplifier tuning parameters and encoder feedback are pre-configured for this motor frame, so commissioning time is limited to power-up and auto-tuning.
The 3.0 kW rated output (30 in the order code) sizes this for a 3 kW induction or synchronous motor on a 400 V three-phase supply — typical for a small conveyor, a spindle drive, or a packaging-machine axis. The 2000 r/min base speed matches most 4-pole servo motors; if your application needs higher top speed, verify the motor's maximum speed rating against your mechanical drive ratio. The A in MR-JE-_A designates the general-purpose interface variant — it accepts pulse-train and analog speed/torque commands, so it fits into most standard motion controllers without a fieldbus option card.