Drive identity and key ratings
The Fuji FRN500AR1S-4U is a FRENIC-HVAC series drive rated for 500 HP on a 460 V three-phase supply, configured as a UL open type enclosure. This is a dedicated HVAC drive variant within the FRENIC family, sized for large fan and pump loads in commercial or industrial building systems.
Deployment context
As a UL open type drive, the FRN500AR1S-4U is intended for installation inside an electrical enclosure that provides the required environmental protection. The 500 HP rating at 460 V places it in the large-drive category, typically feeding centrifugal fans, cooling-tower fans, or condenser-water pumps in chiller plants and air-handling systems. Panel integration requires attention to bus-bar sizing and cooling airflow for the drive's heat sink.