What this SH3 frame is
SH30553P0AF4000 is a Schneider Electric SH3 series brushless AC servo motor, sized under reference SH30553P on a 55 mm flange. The compact 203 mm body houses the brake assembly, resolver-rated rotor and an integrated single-turn absolute encoder on a Hiperface DSL link. It is the SH3 frame typically paired with Lexium series drives for low-inertia packaging, labelling and small-format pick-and-place axes. Natural convection cooling — no integrated fan — keeps the body sealed, which is why the shaft bushing is rated IP54 and the motor body IP65 per IEC 60034-5. On a washdown-adjacent line that IP split is worth catching: the shaft seal is the wet-end limit, not the housing threads.
Torque and speed envelope at the three supply rails
At 230 V single-phase the motor delivers 1.1 N.m nominal torque at 4000 rpm; jumping to 400 V or 480 V three-phase trades torque for speed, dropping nominal torque to 0.81 N.m while pushing nominal speed to 8000 rpm and 9000 rpm respectively. Continuous power climbs with it — 390 W at 230 V single-phase versus 680 W at 400 V and 480 V three-phase. The peak stall torque ceiling is 3.5 N.m across 115…480 V three-phase, with a continuous stall torque of 1.05 N.m and a continuous stall current of 1.7 A. Peak 3-second output current hits 6.5 A Irms. The electrical signature a controls engineer sizes against: 10.4 Ohm stator resistance, 13.02 mH inductance, back-EMF constant 41 V/krpm at 20 °C, torque constant 0.62 N.m/A at 120 °C. Maximum mechanical speed is 9000 rpm — the drive must cap the velocity command below that, not against the electrical rating.
Inertia, brake and rotor package
Shaft is a smooth 9 mm diameter, 20 mm long, with a 40 mm centring collar 2 mm deep and four 5.5 mm mounting holes on the international standard flange. Maximum radial load is 660 N at 1000 rpm; maximum axial load is 80 N — coupling alignment and overhung loads matter more than the brake rating in service life.