What it is and where it drops in
The Siemens 1FL2103-4AG10-1MC0 is a SIMOTICS S-1FL2 low-inertia servomotor from the family explicitly sized for the SINAMICS S200 drive platform. Rated 0.4 kW (Pn) with a nominal speed of 3000 rpm and equal standstill/rated torque of 1.27 Nm (M0 = Mn), it slots into the 30 mm shaft-height frame — a compact point-of-motion for small packaging, labelling, pick-and-place and feeder axes where a SINAMICS S200 is already the chosen drive. The 200 V 3AC supply voltage ties the motor directly to the SINAMICS S200 input class, so the cabinet side runs a single mains level rather than a step-up transformer for a 400 V servo.
Reading the headline ratings
Pn = 0.4 kW at Nn = 3000 rpm with M0 = Mn = 1.27 Nm means the motor delivers the same torque at standstill as at rated speed — useful for indexing and start-stop cycles where the axis holds position under load without torque foldback. An integrated holding brake holds the axis when the drive is disabled — important for vertical or biased loads where the servo loses power and the mechanism must not back-drive.
Connector, sealing and panel-side fit
The hybrid AM21bit connector carries power and the absolute encoder signalling in one shell, so the panel-side wiring is a single cordset rather than separate power and feedback runs. A keyed shaft with tolerance N and shaft key is supplied, so coupling alignment follows the standard half-key convention rather than a friction-fit or shrink-disc mount.
Lifecycle, compliance and how to source it
Lifecycle stage is recorded as current and product status as Active, so the part is in normal production rather than on a last-time-buy window. Group code R220 and product group X0DJ are the internal classification lines used in Siemens ordering and MRP systems. Product class C applies: the motor is manufactured or produced to order and cannot be reused, re-utilised or returned against credit — so the BOM line must be committed before build, and a spare kept on the shelf is the right way to cover a future line-down event.