What it is and what it does
The Siemens 6ES7928-2BB00-0AA0 is a pack of self-adhesive labels sized 6x15mm, supplied as 5 mats of 40 pieces each for a total of 200 labels per unit. These are the standard identification labels used across the SIMATIC S7 family for marking I/O modules, terminal blocks, and field wiring points.
What the ratings mean for fit
The 6x15mm label dimension is the critical fit parameter — it matches the label recess on Siemens SIMATIC S7-300, S7-400, and S7-1200/1500 front connectors and terminal blocks. The 200-piece count (5 mats × 40) covers a typical cabinet build for a medium-density I/O rack without needing a second pack. The self-adhesive backing allows clean application to the plastic label carrier; no additional adhesive or label holder is required.