400 V 3AC, 0.75 kW, 3000 rpm — the SINAMICS S200 workhorse in the 1FL2 family
The Siemens 1FL2304-4AF11-1MB0 is a SIMOTICS S-1FL2 servo in the 1FL2 family sized specifically for the SINAMICS S200 drive platform, supplied as a 400 V 3AC unit rated 0.75 kW with a 3000 rpm nominal speed, 3.02 Nm stall torque (M0) and 2.39 Nm rated torque (Mn). It carries an AM21 21-bit absolute encoder, a shaft key with N tolerance, and a holding brake — the standard package for a positioning axis that must hold position when the bus drops or the drive stages out of enable. Shaft height 45 mm places it in the lower end of the 1FL2 frame range, so the cabinet-side mounting footprint stays compact while still delivering the torque density the SINAMICS S200 is tuned for at this power point. In deployment terms, this is the motor you'd reach for on a small-format pick-and-place gantry, a feeder or indexing table, or a short-stroke linear actuator fed from a SINAMICS S200 — anywhere the loop bandwidth of the S200 platform needs a low-inertia rotor the 1FL2 family was characterised against.
IP65 with oil seal — the cabinet-perimeter spec that decides washdown siting
Protection class IP65 with oil seal means the shaft pass-through is sealed against light coolant mist and oil film typical of a machine tool or gearbox sump — the seal is the part that lets this 1FL2 sit just outside the wet zone rather than only deep inside a sealed cabinet. For commissioning, the angular connector orientation is fixed at build time, so the cable gland direction needs to be confirmed against the cabinet layout before the motor is mounted — the cable can't be rotated on a re-terminated lead the way it can on a straight connector.
Built-to-order, single-piece line — what the ordering record says
The product class for 1FL2304-4AF11-1MB0 is class C — a build-to-order configuration that is manufactured per the order, cannot be re-used or re-utilised, and is not returnable against credit. Practical effect for the buyer: lead time is governed by Siemens build slot rather than shelf stock, and the configuration must be locked before the PO is released. The current lifecycle record shows the part as active, Group Code R220 in Product Group X0DM — both ordering-channel fields that have to appear on the purchase order line so the order routes to the correct factory slot. Packaging is a single-piece shipper at 432.00 x 222.00 x 240.00 mm — useful for the receiving dock and for sizing the MRO shelf footprint when a line-down spare is being staged.
Because 1FL2304-4AF11-1MB0 sits in build-to-order product class C, the practical supply path is to quote against the configured BOM line: pricing and the build slot lead time are confirmed at RFQ submission, with no implied shelf-availability claim. Independent distribution handles the order against the same configuration code, so a buyer doesn't need to convert part numbers when sourcing through a non-OEM channel.