The 6SL3520-0XB40-7AF0 is the highest-rated FSA B-connector SINAMICS G115D before the step to FSB — 0.75 kW in the compact FSA frame (380 × 156 × 129 mm) with PROFINET communication. Rated for 2.2 A continuous output (HO) at 380–480 V three-phase, it serves conveyor zones at the upper end of FSA natural-convection current capacity. Integrated PROFINET with PROFIsafe for STO and 2-port switch for daisy-chain topology. Compatible with IE2/IE3/IE4 motors across 0–550 Hz, IP65 sealed.

Why three connector types at the same 0.75 kW FSA power?

B-connector (0XB40/1XB40), C-connector (0XC00/1XC00), and D-connector (0XD00) all cover the 0.75 kW FSA power level. The three connector systems differ in cable entry geometry, termination style, and installation envelope — they are mechanical alternatives, not electrical distinctions. Same-power drives with the same communication variant are electrically identical regardless of connector type. Choice depends on the existing cable ecosystem in the facility and preferred installation orientation. All three can coexist on the same PROFINET or I/O network. Consult the G115D operating instructions for dimensional drawings of each connector variant.