The 6SL3520-0XB40-3AF0 is the entry-level B-connector SINAMICS G115D distributed drive — 0.37 kW in the compact FSA frame (380 × 156 × 129 mm, natural convection) with PROFINET communication. Rated for 1.3 A continuous output (HO) at 380–480 V three-phase with 200% overload for 3 seconds, it handles the lightest conveyor zone applications — the smallest three-phase motor loads in a sealed IP65 enclosure. Integrated PROFINET with PROFIsafe for STO over the same Ethernet cable and a 2-port switch supporting daisy-chain line topology without field switches at every node. Compatible with IE2/IE3 asynchronous and IE4 synchronous reluctance motors across 0–550 Hz.

Three connectors at 0.37 kW — which one should I choose?

At 0.37 kW FSA, the G115D is available with B-connector (0XB40/1XB40), C-connector (0XC00/1XC00), and D-connector (0XD00). All three are electrically identical at the same communication variant — same 1.3 A HO rating, same 380–480 V supply, same motor compatibility. The choice is connector geometry and cable entry orientation: B, C, and D connectors differ in termination style and mechanical installation envelope. Select based on the existing cable infrastructure in the facility — there is no electrical performance difference. All three connector types can coexist on the same PROFINET or I/O network.