What you're slotting into the cabinet
The 1FL2203-4AG00-1SC0 is a Siemens SIMOTICS S-1FL2 low-voltage servomotor from the 1FL2 family, built to ride on a SINAMICS S200 drive (PN 0.4 kW, 200 V 3AC supply, Nn 3000 rpm, M0/Mn 1.27 Nm, 30 mm shaft height) — a match-by-design pairing, not a generic brushless drop-in. Feedback is the 21-bit hybrid connector variant with keyed shaft (tolerance N) and no holding brake; this build is intended for applications where the load decelerates naturally and an external brake isn't required.
Sizing the demand against the motor
Continuous rated torque equals standstill torque at 1.27 Nm on a 0.4 kW / 3000 rpm frame — operation above Mn needs a current/torque ceiling on the S200 side rather than a bigger motor; the 1FL2 sizing curve handles intermittent loads, not continuous over-rating. 200 V 3AC supply is the low-voltage SINAMICS S200 rail, not a 400 V class — confirm drive input rating matches the bus before commissioning a 230 V single-phase feed; mismatch trips DC bus undervoltage on acceleration.
Encoder, brake, and shaft details that matter on the swap
The 21-bit hybrid encoder is wired through the matching hybrid connector — orientation of the power/signal keying matters because the S-1FL2 family does not cross-mate encoder variants. Configured without a holding brake and without an oil seal; IP54 with a keyed shaft fits clean, dry cabinet-side mechanics. For washdown, oil mist, or vertical axes needing an E-stop brake, a different order-code suffix in the 1FL2 family is required.
Lifecycle and how it lands on the BOM
Product is listed as Active and the lifecycle stage reads current — no EOL or last-time-buy signal on the part number itself. Siemens marks this as product class C: built to order, non-returnable; the BOM hit is configured by the suffix string, not pulled from a stocked SKU list. RoHS compliance since 01-01-18 carries through, and REACH Article 33 disclosure applies for current SVHC content; export control shows AL:N / ECCN:N (no special export license flag in the standard shipping record).
Ordering note for the panel builder
Order code 1FL2203-4AG00-1SC0 packs one piece at 315 × 182 × 172 mm; configured-to-order suffix means lead time tracks Siemens order-intake, not shelf stock.