The Siemens 6SL3211-1NE23-8UG1 is a SINAMICS G120 PM230 Power Module in the FSC (Frame Size C) form factor, rated for 380-480 V 3 AC input at 47-63 Hz. It delivers 18.5 kW under low-overload duty — defined as 150% rated current for 3 s, 110% for 57 s, and 100% continuously for 240 s — with an ambient temperature range of 0 to +40 °C. The module is unfiltered and carries IP20/PT degree of protection, meaning it is suited for installation inside a control cabinet where the enclosure provides the environmental seal.
Overload Profile and Duty Selection
The low-overload (LO) rating defines the thermal capacity: 18.5 kW continuous, with a 150% overload for 3 seconds and 110% for 57 seconds, followed by a 240-second recovery at 100%. This profile matches constant-torque applications like conveyors, mixers, and positive-displacement pumps where brief overloads occur during start or jam conditions. For high-overload (HO) duty — typically needed for extruders, crushers, or hoists — a different PM230 variant with a higher current rating would be required. The 380-480 VAC input range with ±10% tolerance covers most global industrial mains without a transformer tap change.