The VFD040EL43W: The '43' in the code marks the 460V three-phase input class; the 'W' suffix marks Delta's minimal-and-economic positioning within the EL family — the stripped-down option for cost-sensitive panels where a full-featured drive is overkill. Voltage tolerance is ±10% (342 V to 528 V) and frequency tolerance ±5% (47-63 Hz), so the drive rides through the typical North American 480V plant supply without complaint, including generator-backed feeds that drift on transient load steps.
Sizing the drive to the motor load
The 9.0 A rated output and 4.0 kW / 5.5 HP figure are matched to a four-pole induction motor in that power bracket — typical loads being pumps, fans, conveyors, and small compressors where sensorless vector control gives enough low-speed torque for open-loop starting without an encoder feedback card. Cooling is fan-cooled — the chassis draws air through itself, so cabinet layout matters: the intake and exhaust paths need clearance from cable bundles and adjacent heat sources, and the enclosure ambient should be budgeted against the drive's derating curve if it lives inside a sealed panel above 40°C.
Production status and panel-builder sourcing
We do not hold a standing inventory claim for this code; each build is pulled against the live distributor channel.