The 6SL3520-1XM04-0AB0 delivers 4 kW in the G115D FSB frame with the AB-suffix enhanced I/O — the mid-tier 4 kW configuration for decentralized drives that need more than base I/O but do not require PROFINET network integration. Electrically identical to the 0AA0 at 10.2 A continuous (20.4 A peak), it provides the same motor control with expanded hardwired connectivity. The 1XM FSB enclosure (425 × 240 × 169 mm) mounts directly on the machine frame with IP65/IP66 protection and integrated forced-air cooling.

The AB enhanced configuration adds digital and analog I/O channels beyond the AA base variant, plus an additional STO interface — suited for decentralized stations where proximity sensors, limit switches, and safety devices terminate at the drive rather than routing back to a central cabinet. The 4 kW power class with 169 mm enclosure depth reflects the integrated cooling fan required above 3 kW — the drive handles the highest FSB power rating with forced-air cooling. Standard G115D features apply: integrated C2 EMC filter, internal braking chopper, STO SIL 2, and SAM web-server commissioning.