The FRN005E1S-4U is a Fuji Electric 3-phase motor drive rated for 460 V and 5 HP output. It sits in the FRENIC-E1S series, positioned for general-purpose variable-speed control of induction motors in pump, fan, and conveyor applications.
The 5 HP / 460 V rating defines the motor it can drive: a 3.7 kW 4-pole induction motor on a 400–480 V three-phase supply. For a furnace combustion air blower or an induced-draft fan, this drive matches a 5 HP motor nameplate.
No successor has been announced, and no phase-out notice applies.