The 6SL3520-1XN04-0AF0 is a 4 kW SINAMICS G115D modular distributed drive with PROFINET communication — the AF0 suffix variant at the FSB frame's highest power rating. It delivers 10.2 A rated output (HO) at 380–480 V 3 AC with integrated fan cooling and IP65/IP66 sealed protection.

4 kW FSB: the fan-cooled crossover point in the 1XN series

At 4 kW, the G115D FSB frame transitions from natural convection (3 kW, 134 mm depth) to integrated fan cooling (4 kW, 169 mm depth). The deeper housing accommodates the fan and its airflow path while maintaining the same 425 × 180 mm mounting footprint. The AF0 suffix provides PROFINET/PROFIsafe for coordinated multi-axis conveyor control via TIA Portal. The 1XN modular connector system supports plug-in power and signal wiring, reducing installation time and simplifying drive replacement on the machine.