The Fuji FRN0005C2S-4C is a FRENIC Series Inverter rated for three-phase 400V supply with a 10A circuit breaker recommendation and a matching 10A Class J fuse for branch-circuit protection. The filter type FS20229-9-07 is integrated on the line side to attenuate conducted emissions — mount the drive close to the line entry so the filter's common-mode choke sees clean AC before the DC bus. For a 400V class drive this size, the 10A breaker and fuse pair gives a straightforward coordination point for the panel builder; no need to oversize for inrush on a standard induction motor start.
Wiring practice note
The 10A circuit breaker and Class J fuse are the manufacturer's specified overcurrent protection — wire the drive input through a 10A breaker first, then the Class J fuse holder, then the drive line terminals. The filter type FS20229-9-07 is internal to the drive enclosure, so no external EMC filter is required for most installations. Keep the input power cable twisted and shielded from the panel entry to the drive to preserve the filter's attenuation above 150 kHz.