What the nameplate carries
The ABB ACS355-03E-23A1-4+N826 is the ACS355 machinery-drive platform carrying the +N826 factory option suffix, listed on the motor drives line under ABB part number ACS355-03E-23A1-4+N826. At 1.63 kg the unit sits in the wall-mount IP20 machinery-drive weight class — light enough for a single-person cabinet install but still a heat-dissipating device that wants clearance above and below for the cooling path, so the panel layout needs to budget for airflow rather than just DIN-rail real estate.
Sourcing reality for a hot-strip mill specifier
For a rolling-mill controls engineer the right move is to specify the full order code including the +N826 suffix on the BOM line — the suffix is what differentiates a standard ACS355-03E-23A1-4 from the configured variant, and a sub without the suffix is not the same part even though the base current rating matches. Specifying into the BOM by full order code also keeps the spares list consistent: a swap to a non-+N826 unit changes the option set the cabinet was wired for, which is the kind of silent drift that surfaces as a commissioning parameter mismatch months later.
What the ACS355 class is used for
The ACS355 line is the ABB machinery-drive family aimed at OEM machine builders — conveyors, mixers, extruders, fans, pumps — where the drive sits inside the machine cabinet rather than in a process MCC, which matches the 1.63 kg wall-mount form factor on this variant. Mounting is the standard ACS355 pattern: vertical on the cabinet back plate with the supply terminals at the bottom and motor terminals at the top, which keeps the cable routing segregated and lets the cooling air move bottom-to-top across the heatsink without obstruction from cable looms.
Panel-builder checklist before energizing
Bond the drive chassis to the cabinet PE bus at the shortest practical pigtail; long ground leads defeat the EMC filtering on this drive class and let common-mode noise couple onto the encoder or analog feedback cabling that typically shares the cabinet. Keep the motor cable run short and use a shielded VFD-rated cable with the shield bonded at both ends through the gland plate; the motor cable is the dominant common-mode radiator on this drive class and the shield termination is what contains it.
Closing the BOM line
An RFQ quoting the full order code ACS355-03E-23A1-4+N826 with the +N826 suffix and the motor full-load current is the cleanest way to confirm availability and lead time against the ABB channel, since the option suffix is what gets matched on the factory side. For sites already standardizing on the newer ACS380 platform, the ACS355-03E-23A1-4+N826 remains a service-class spare for legacy cabinets rather than a like-for-like drop-in, because the ACS380 changes both the footprint class and the fieldbus option slot mapping — the order codes differ in more than the rating string.