The 6SL3230-3YE20-1AP0 is a 4 kW SINAMICS G120X converter configured with a Category C2 EMC filter and DC terminals for braking resistor connection — the standard catalog variant for industrial pump and fan applications. It delivers 10.5 A LO rated output with 110% overload capability for 60 seconds at 3AC 380–480 V input. The FSB frame (140 × 295 × 209 mm) installs in a standard control cabinet with IP20 protection.

What does the C2 EMC filter cover?

The Category C2 filter limits conducted and radiated emissions to levels acceptable for industrial low-voltage networks per IEC 61800-3. It is the standard choice for fixed installations fed from a dedicated transformer — covering the vast majority of pump-house and HVAC plant-room environments. For public low-voltage networks (residential areas), Class C1 may be required; for IT networks or particularly long motor cables, the Unfiltered (U) variant with external filtering may be preferred.

When are DC terminals needed at 4 kW?

The DC-link terminals provide a connection point for an external braking resistor or a shared DC bus. At 4 kW, regenerative energy from a decelerating pump or fan is modest, but applications with frequent start-stop cycles or high-inertia loads benefit from a braking resistor to dissipate excess energy — preventing DC-link overvoltage trips without increasing deceleration ramp times.