At 1.5 kW (4.1 A rated, 8.2 A overload), the 6SL3520-0XA21-5AF0 is the highest power in the 0XA2x FSA segment — the ceiling of what the compact 380 × 156 × 129 mm convection-cooled envelope can sustain at 67 W power loss. The 4.1 A continuous output matches 1.5 kW SIMOGEAR 2KJ8 geared motors, covering the largest motors routinely deployed on individual zone-roller conveyor sections.

How does the 0XA21 1.5 kW compare to its 0XA6x counterpart?

The 0XA21-5 (1.5 kW FSA) in the 0XA2x catalog system is technically identical to the 0XA61-5 in the 0XA6x system — same FSA frame, same 4.1 A rated output, same 67 W power loss, same 350 Ω braking resistor, same PROFINET/Ethernet IP interface. The difference is purely in the commercial catalog code — 0XA2x versus 0XA6x — which may reflect regional distribution channels, frame-contract pricing structures, or legacy catalog numbering. For the engineer specifying the drive, the technical data sheet is interchangeable between the two code systems. The 0XA21-5AF0 is the FSA ceiling: anything above 1.5 kW steps into FSB territory with the larger 425 × 180 mm envelope.

Key specifications

The drive operates from a 3 AC 380–480 V supply (45–66 Hz) with an output frequency range of 0–550 Hz. High-overload capability delivers 200% for 3 seconds and 150% for 57 seconds. The 350 Ω integrated braking resistor (10 W continuous) supports dynamic braking. Integrated PROFINET and Ethernet IP interfaces connect directly to SIMATIC controllers. The built-in C2 RFI filter meets EN 61800-3 Category C2 conducted emission limits.