The 6SL3520-0XB41-5AF0 is the highest-power FSA-frame SINAMICS G115D drive — 1.5 kW in the compact 380 × 156 × 129 mm IP65 enclosure (~4.7 kg) with B-connector and natural convection cooling. Rated for 4.1 A continuous output (HO) at 380–480 V three-phase, it provides PROFINET IO and EtherNet/IP communication with integrated PROFIsafe for STO over the same Ethernet cable — the most communication capability available in the smallest G115D package.

What makes this the top FSA configuration?

At 1.5 kW, the FSA frame reaches its thermal limit with natural convection cooling. This is the maximum FSA power rating — the next step up (2.2 kW) requires the larger FSB fanless enclosure. Combined with the AF0 PROFINET variant, the 0XB41-5AF0 delivers the highest power AND the most capable communication interface in the smallest G115D form factor. The integrated 2-port switch supports daisy-chain line topology — each drive connects to the next without a field switch at every node. MRP ring redundancy is supported for fault-tolerant network architectures. Compatible with IE2/IE3 asynchronous and IE4 synchronous reluctance motors across 0–550 Hz.