What ships in the box and what it mounts into
The Delta VFD370B43A is a B-series variable frequency drive rated for 460 V three-phase input and 50 HP (37 kW) continuous motor output, with fan cooling as the stated thermal method — a panel-mount form factor sized for an industrial enclosure rather than a wall-mount field cabinet. Ambient humidity is rated below 90 % RH non-condensing and storage/transport temperature spans -20 C to 60 C, which defines the climate envelope between uncrate and commissioning.
Ratings that decide the fit
The 150 % of rated current for 1 minute overload endurance is the duty figure that actually governs sizing for high-inertia loads — fans and conveyors ride below it, but mixers and crushers regularly push past 100 % during start-up, and the one-minute ceiling is what separates a real fit from a nuisance-trip. Stall prevention is adjustable from 20 % to 250 % of rated current, giving the integrator room to tune the protection level to the mechanical load rather than living with a fixed factory default. Frequency resolution is 0.01 Hz and three skip-frequency zones cover 0.1–400 Hz, which is the parameter set a commissioning engineer reaches for first when the motor exhibits a resonant whine at a specific operating speed.
Sourcing and lifecycle posture
Estimated lead time on the listing is one to ten working days, a typical industrial-automation distribution window for an active drive in this frame size rather than a same-day ship — the exact slot depends on the RFQ quantity and the warehouse holding it at quote time.