The 6SL3520-1XM04-0AA0 is the 4 kW G115D in the 1XM-variant FSB frame with AA-suffix base I/O — the essential-configuration entry point for mid-power decentralized drives. Rated 10.2 A continuous (20.4 A peak at 200% for 3 seconds), it powers conveyor sections, transfer stations, and material handling equipment directly on the machine frame. The 1XM FSB enclosure (425 × 240 × 169 mm) includes an integrated cooling fan — the 4 kW power class marks the transition from natural convection to forced-air cooling in the G115D lineup.

The AA base configuration covers core decentralized drive functions: digital I/O for start/stop and direction control, one safe torque off (STO) channel, and the integrated C2 EMC filter. For applications that need additional I/O channels or expanded safety interfaces, the AB enhanced variant adds those — but when the machine controller already handles sensor feedback and safety logic upstream, the AA variant avoids hardware overhead. Standard G115D features apply: 200% overload, internal braking chopper, STO SIL 2, and SAM web-server commissioning with IP65/IP66/Type 4X protection.