Mitsubishi FR-A840-00770-2-60 – 770 A SLD, Current Production Inverter
The Mitsubishi Electric FR-A840-00770-2-60 is an FR-A800 inverter in the 400V class, rated for 770 A SLD continuous current. The -60 suffix indicates the board is factory-coated for environments with condensation or light chemical exposure — skip that if your panel stays clean and dry.
What the 770 A SLD Rating Means for Your Drive Sizing
SLD (Standard Load Duty) indicates the continuous current the inverter can deliver to a standard-duty motor load at 400V. The Type -2 = CA tells the factory that this unit ships with the standard control terminal configuration for the FR-A800 series — no special options like separate fan power or safety inputs, just the standard I/O and built-in PID.
Board Coating Option – When It Matters
The -60 suffix adds a conformal coating (3C2) on the main board. Plated conductors inside the coating process reduce creepage corrosion risk. If this drive sits in a non-conditioned cabinet near a cooling tower or washdown area, the coating saves a field failure. In a clean, climate-controlled server room you don't need it.