The Fuji FRN003AR1M-5U is a FRENIC-HVAC variable frequency drive rated for 3 HP on a 3-phase 575 V supply, housed in a UL/NEMA Type 1 enclosure. This is a dedicated HVAC drive — the FRENIC-HVAC series is built for fan, pump, and compressor loads common in building management and light industrial air handling, where the 575 V class suits North American 600 V-class distribution systems.
The 3 HP / 575 V rating tells you the drive is sized for a motor drawing roughly 3 A full-load current at 575 V (typical for a 3 HP 4-pole induction motor on 600 V class supply). The FRENIC-HVAC series carries built-in PID for duct static pressure or temperature control loops, so the drive can close a control loop without an external controller.
Deployment context
Mounts in a standard panel or on a backplate via the integral mounting tabs; the Type 1 enclosure does not require a separate cabinet for drip protection, but the drive itself is not sealed against washdown. Terminal blocks accept stranded copper wire sized for the 3 HP output — land the input power, motor leads, and control wiring per the manual's torque specs. The control terminal strip provides analog inputs for a 0-10 V or 4-20 mA speed reference from a BMS or thermostat.