The Siemens SIRIUS 3RV2011-0DA20-ZW96 is a Size S00 motor protection circuit breaker designed for motor protection, with a Class 10 trip characteristic and 100 kA breaking capacity at 400 V AC (and across the 240–690 V range).
Mounts in any position — no orientation restrictions — and the 45 mm width × 97 mm depth × 106 mm height footprint fits the S00 frame slot common in Siemens SIRIUS panels.
Compared to the 3RV2011-0BA20, this -ZW96 variant carries the same S00 frame and Class 10 trip but adds the -ZW96 suffix — typically a special-function or customized-order code. If your panel was wired for the 0BA20, the physical fit (mounting, terminals, dimensions) is identical; the electrical ratings should match for motor protection duty, but verify the specific -ZW96 parameter set against your motor FLA before committing. The 0BA20 is a standard off-the-shelf part; the -ZW96 may have been ordered for a specific OEM spec or project variant.