Mitsubishi FR-A840-05470-2-60 FR-A800 Inverter, 400V, 547A

The FR-A840-05470-2-60 is a Mitsubishi Electric FR-A800 series inverter in the 400 V class, rated for a SLD (slight overload) continuous current of 547 A. That SLD rating means it can deliver 547 A continuously for typical variable-torque loads like fans and pumps, with a 110% overload for 60 seconds — a common spec for centrifugal applications where peak demand is brief. The standard model designation (Structure, functionality: 0) indicates no special options like built-in PLC or brake chopper; it's the base configuration for the frame size. The -60 suffix confirms circuit board coating (3C2) is applied, with plated conductors on the power board. This coating provides a conformal layer that resists moisture, dust, and corrosive atmospheres — relevant if the drive sits in a non-conditioned enclosure near washdown areas or coastal installations. The plated conductor treatment further protects bus bars and connections from oxidation over the service life.