The Fuji FRN020AR1M-2U is a FRENIC-HVAC series variable-frequency drive rated for 20 HP on a 3-phase 230 V supply, housed in a UL/NEMA Type 1 enclosure. That rating means it directly matches a 20 HP motor nameplate at 230 V — no derating guesswork for standard induction motors on fan, pump, or compressor loads.
The 20 HP / 230 V / 3-phase combination is the headline fit check — if your motor plate matches those numbers, this drive is sized correctly for continuous duty. The UL listing and NEMA Type 1 enclosure mean the drive is accepted for North American panel installations without a separate enclosure for basic indoor protection. No IP rating is stated, so keep it dry and indoors.