Drive sizing and fit
The FRN450G1S-4U is a Fuji Electric Frenic variable frequency drive rated 450 HP at 480 VAC three-phase input, delivering 415 A continuous output. This is a heavy-duty rated unit — the 415 A figure is the continuous current capability under typical motor load profiles, so it matches a 450 HP induction motor directly without oversizing. Panel-mount construction keeps the enclosure compact for a drive of this power class; plan for adequate airflow above and below the heatsink fins.
Application notes
The drive is listed as no-brake variant, meaning the DC-link braking transistor is not populated. For applications requiring rapid deceleration or vertical load holding, an external braking resistor and chopper module must be added. The panel-mount format suits standard 19-inch or backplate layouts; verify gland-plate clearance for incoming 480 VAC power and motor cables sized for 415 A.