The Mitsubishi FR-D720S-042-N4 is a compact motor drive from the FR-D700 series, rated 4.2 A and 1 HP on single-phase 200 V input. That 4.2 A rating is the continuous output current — it governs the motor frame size you can pair with this drive. For a 1 HP, 200 V single-phase induction motor, this is the direct match; the drive's output is sized for that load without headroom for oversizing.
Design and firmware
This unit carries the designation "With Specific Firmware" — meaning the control logic is pre-loaded for a particular application profile, not a general-purpose V/Hz or sensorless vector baseline. Per the datasheet, that firmware variant may alter parameter access, default ramp times, or I/O logic compared to the standard FR-D720S. If you are replacing a failed unit, confirm the firmware revision on the nameplate matches the original; a mismatch can shift behavior on the line.