The ACS355-03E-03A3-4: Typical losses at rated load are 36 W, which is the figure to feed into a cabinet thermal calc alongside the 1.2 Kg unit mass (2.5 Kg shipping) — frame R1 IP20 keeps the heat sink in the panel airstream rather than on the wall of an enclosure, so a few watts of margin in the dissipation budget pays off in a hot cabinet.
DC bus window and what the auxiliary voltage entries actually mean
The DC-side envelope is listed as 250 V to 840 V, which is the figure a controls integrator uses when the drive is fed from a common DC bus or a regen supply rather than directly from the AC line. The same record also lists an MPPT-style window of 460 to 800 V; that nomenclature reads like a photovoltaic inverter field rather than a machinery drive, so it should be treated as a data artefact on this listing and not interpreted as an instruction to wire a PV string into the DC link.
Sizing against the second-source candidate
The closest ACS355-03E family alternative is ACS355-03E-02A4-4 at 0.55 kW / 0.75 hp with I2N of 2.4 A — same frame R1 IP20 footprint, so the panel cutout, mounting holes and terminal map do not change, but the continuous current drops from 3.3 A to 2.4 A. If a panel was originally specified around the 02A4-4 and a 03A3-4 is fitted as a replacement, the wiring, contactor, fusing and EMC footprint all carry over unchanged; the substitution is over-rated, not under-rated, and is safe from a thermal standpoint. The reverse — dropping a 02A4-4 into a 03A3-4 panel — is the swap that needs an overload check before energising.