At 0.37 kW (1.3 A rated, 2.6 A overload), the 6SL3520-1XE40-3AB0 makes the case that the smallest drive on the line should carry the same engineering standard as the largest. The 1XE designation — gland-type cable entry, integrated C2 RFI filter, IP66 compression seal — is not reserved for high-power units. It comes standard on the 0.37 kW FSA, which means the OEM writes one specification for environmental protection and EMC compliance across the entire conveyor project.

Why does standardization at the low-power end reduce project engineering cost?

On a large conveyor project, the 0.37 kW zones may account for 60–70% of the total drive count. If these low-power units required different cabling, different EMC measures, or different sealing than the higher-power drives, the engineering documentation, procurement BOM, and installation procedures would fork into multiple variants. The 1XE series eliminates that fork: one cable gland type, one filter category, one IP rating, one commissioning workflow — from 0.37 kW to 7.5 kW. The 33.7 W power stage runs entirely on natural convection with no fan service interval, making the 0.37 kW FSA the lowest-maintenance drive on the line by a wide margin.

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.