What this order code covers
The ABB ACS550-01-072A-4+B055 is an AC drive in the Motor Drives class, listed under Drives within the broader Motors & Motor Controls category. The +B055 suffix is part of the order string on this listing — it travels with the base code ACS550-01-072A-4 and is what the buyer quotes against on the BOM line. Package weight is 12.02 kgs, which is a one-person lift but worth planning for at the cabinet stage — panel depth and the lifting clearance around the gland plate should both accommodate it before the drive is staged on the back panel.
Where this class sits in a panel
ACS550-series units are general-purpose AC drives sized for standard induction-motor loads. The order code itself is the catalog string on file; voltage-class specifics belong to the project spec, not this listing. The ACS550 line carries a sensorless-vector control mode that handles constant-torque loads such as conveyors, mixers, and pumps without an encoder; variable-torque fan and centrifugal-pump profiles are also standard. Cable-run filtering needs a dV/dt or sine check at the drive output.
Sourcing posture
No production-status or successor entry is on file for this exact code. The sourcing posture is quoted-to-order against an RFQ, with the full order string including the +B055 suffix specified into the BOM line.