The 6SL3520-0XB01-1AF0 extends 0XB01 downward to 1.1 kW — confirming the 0XB0x FSA code is a dual-power designation (1.1 kW and 1.5 kW), consistent with every other G115D FSA upper-power code across all families. It delivers 3.1 A HO (6.2 A LO) in the FSA compact frame (380 × 156 × 129 mm, ~4.7 kg) with natural convection cooling. AF0 provides PROFINET IO with PROFIsafe, EtherNet/IP, and an integrated 2-port switch, designated for SIMATIC control systems. Operates at 380–480 V three-phase, compatible with IE2/IE3/IE4 motors across 0–550 Hz, IP65 sealed.

0XB01: two powers, one FSA code

Both power ratings share the identical FSA enclosure — the difference is the IGBT stage rating. 0XB01 is the only FSA code in the 0XB0x sub-series that covers the upper FSA power range (1.1–1.5 kW). It parallels 0XB41 (0XB4x sub-series), XH21 (0XH), 1XA01/1XA21/1XA61 (1XA), XE41 (XE4x), and XE01 (XE0x) — seven parallel catalog paths for the same 1.1–1.5 kW FSA hardware.