What this motor module is and what it does
The 6SL5120-1UE28-5AC0 is a SINAMICS S220 Single Motor Module in the booksize C form factor — Siemens' compact power stage for multi-axis servo systems where individual drive stages share a common DC bus. It accepts a DC link input of 495-720 V at up to 106 A and delivers a regulated three-phase AC output of 0-480 V at 85 A rated continuous current, sized for a 45 kW motor. Internal air cooling keeps the package IP20 — this is a cabinet-mount module, not a field-installed device. The booksize C frame shares the DIN-rail or bulkhead mounting footprint with other SINAMICS S220 modules, so a multi-axis cabinet with shared DC bus architecture typically populates several of these modules side by side on a standard backplane or mounting rail.
Input/output ratings and what they mean for motor sizing
The DC input range of 495-720 V spans the rectified bus voltage you see on a 400 V AC line (approximately 565 V DC) and allows headroom for regeneration — a servo axis that decelerates a load feeds energy back onto the DC bus, and the 720 V ceiling sets the overvoltage trip threshold. The 106 A input rating is the bus rectifier ceiling; the 85 A output rating is the continuous current the inverter stage can sustain into the motor windings. Matched to a 45 kW motor at 400 V line, the 85 A output rating gives a comfortable derating margin — a servo motor running at full rated load at base speed draws close to that figure continuously, and the thermal design of the booksize C housing with internal air cooling handles it without external heatsinking. The 480 V output ceiling accommodates the full range of standard industrial servo motor voltages on a 400 V class bus.
Production status and sourcing posture
Listed as Active in Siemens' current production lifecycle and classified as Product Class A — a standard stock item eligible for return within policy — so this is not an NRND or last-time-buy part. It is quoted and sourced to order against your BOM quantity; lead time and availability are confirmed at RFQ.
Compliance and export classification
RoHS compliant since September 2019; REACH Art. 33 duty-to-inform applies due to lead content above the 0.1% threshold — a routine disclosure for older-leaded solder finishes common in industrial power electronics. Export classification is ECCN 3A999A under US EAR, with no Australia List restriction.