The Delta VFD150B43A is a VFD-B series AC drive rated for 20HP (15kW) on a 460V three-phase input. It delivers 150% of rated current for 1 minute, which covers the typical starting and short-term overload demands of a pump, fan, or conveyor motor without nuisance tripping. The fan-cooled enclosure keeps the power stage within limits during continuous duty.
The 460V three-phase input matches standard North American 460V industrial mains. The 20HP (15kW) output rating sizes it for a 15 kW induction motor; if your motor nameplate is 18.5 kW, step up to the next frame. The 150% overload endurance for 1 minute means the drive can handle a momentary load spike — like a crusher jam or a cold-start pump — without tripping, as long as the duty cycle allows recovery. The stall prevention level is adjustable from 20 to 250% of rated current, giving you room to tune the current limit for the specific load.