The Delta VFD3A0MH43ANSAA is a variable-frequency AC drive sized for a 0.75 kW / 1 HP motor on a 3-phase 380–480 V supply (–15 % to +10 %), 50/60 Hz — the kind of compact VFD that sits behind a small pump, conveyor, fan, or mixer in a control panel. At 0.75 kW this is the smallest frame on Delta's 480 V line; the 480 V class typically deploys in industrial panels serving three-phase induction motors in factory automation, where the drive sets motor speed by varying output frequency within the rated 47–63 Hz input tolerance.
Output current and the heavy-duty decision
Rated output current is 3.3 A with a rated output capacity of 2.5 kVA, matched to the 0.75 kW / 1 HP motor class — the limiting figure for fit is the heavy-duty input current of 4.2 A, not the slightly higher 4.6 A normal-duty figure, because heavy-duty (constant-torque) operation is what trips undersized drives on conveyor and mixer loads. Operating voltage range is 323–528 V AC across the 3-phase 380–480 V nominal window, so the drive tolerates the supply sag and swell seen on plant buses without dropping out; carrier frequency is settable 2–15 kHz with a 4 kHz factory default, and raising it quiets motor whine but increases drive losses — the trade-off buyers usually leave at default unless acoustics demand otherwise.
Frame A, natural cooling, IP20
The EMC filter is listed as optional on this code, meaning the as-shipped unit ships without an integrated filter and an external line filter must be specified separately if the installation has to meet conducted-emission limits for its environment.