The 6SL3520-2XB45-5AB0 is the AB0 I/O variant of the 5.5 kW FSC G115D in the 4-series B-connector catalog designation. At 13.2 A HO, it powers mid-range conveyor sections with expanded local I/O — supporting multiple direct-wired sensors and actuators without a fieldbus. The 4-series (2XB45) shares the identical 425 × 180 × 169 mm FSC power stage and B-connector with the standard 2XB05 — the "4" is a catalog sub-family identifier observed across all B-connector prefix generations (0XB4x, 1XB4x, 2XB4x).