The Siemens 6SL3211-1NE21-8AL1 is a SINAMICS G120 Power Module PM230 in FSB frame size, rated for 7.5 kW low overload (LO) on a 380-480 V three-phase supply. It delivers 150% overload for 3 seconds, 110% for 57 seconds, and 100% continuous over 240 seconds — the typical pump/fan duty curve for this class. The integrated Class A filter meets EN 61800-3 for conducted emissions, so it can connect directly to an industrial mains supply without an external EMC filter.
The 7.5 kW low-overload rating governs the continuous motor power at 40 °C ambient. That 150% for 3 seconds handles starting torque on centrifugal loads; the 110% for 57 seconds covers brief process surges. The PM230 supports no safety functions — no integrated Safe Torque Off — so it belongs in non-safety-critical variable-torque applications like fans, pumps, and compressors, not on hoists or hazardous-zone conveyors. IP20 protection means it is for enclosure-mounted use only — no washdown, no dust ingress protection. The FSB frame dimensions (345 x 154 x 171 mm) fit standard 400 mm deep cabinets with clearance for the top cable entry.
Integration constraints
This power module ships without a Control Unit — it requires a CU240B/E-2 or CU230P-2 (firmware V4.4 or higher) to operate. The PM230 supports no safety functions, so the Control Unit's STO terminal is not wired. Mounting is direct to the back panel via the FSB fixing points; no DIN-rail adapter exists for this frame size.