1FL2203-4AG10-0MC0 — what sits on the shaft
The Siemens 1FL2203-4AG10-0MC0 is a SIMOTICS S-1FL2 low-inertia servomotor from the 1FL2 product family, sized and specced to run on a SINAMICS S200 drive. Rated 0.4 kW continuous at a nominal speed of 3000 rpm, with 1.27 Nm of both standstill and rated torque on a shaft height of 30 mm, the motor lands in the low-power end of the S-1FL2 range and pairs naturally with S200 servo controllers in compact machine axes. Supply is 200V three-phase, matched to a SINAMICS S200 line; feedback is a 21-bit single-turn absolute encoder, the electrical interface is a hybrid AM21 connector (one-piece power + signal + brake), and the shaft is plain with tolerance N. The housing is IP54 without an oil seal, so the unit is intended for clean industrial cabinet environments rather than washdown or food-grade duty.
Holding brake, encoder, and the field-side wiring
The holding brake is built in, so the 1FL2203-4AG10-0MC0 holds the axis at standstill when de-energized — a standard requirement for vertical or gravity-loaded axes where coast-down on a power loss would be unacceptable. The brake is fed through the same AM21 hybrid cable as power and the 21-bit encoder feedback, which means one cable run to the drive instead of three separate leads and a cleaner cabinet-side gland plate. IP54 limits the deployment envelope: the motor is dust-protected and splash-resistant, but it is not sealed for direct water-jet exposure. Panel integrators wiring it into a machine should keep the motor out of the washdown zone or fit a suitable shroud; the S-1FL2 platform at higher shaft heights offers IP65 variants for harsher duty, so a spec-mismatch at the cabinet review is the most common way this motor gets misapplied.
Lifecycle posture and what that means for spares
For an installed base running the 1FL2 generation, the practical spares posture is to keep one matched unit on the shelf — the motor is a line-down component, and the six-to-eight week window for a build-to-order replacement is exactly the failure mode that gets a shift on a forklift. RoHS compliance has been in force since 01-01-18 and REACH Art. 33 candidate-list information is published, so the part is acceptable in standard EU and most APAC regulatory frameworks without further documentation work.
Buying posture for the 1FL2203-4AG10-0MC0
Build-to-order lead time applies here, so the right way to bring this in is against a quoted RFQ tied to the exact option string — shaft height, encoder, brake, and connector are all baked into the order code and cannot be reworked after the fact.