The 55 mm SH3 with no holding brake
SH30551P1AA4100 sits in the Schneider SH3 family on a 55 mm international-standard flange, with a 9 mm parallel-key shaft and 20 mm shaft length — physically small enough for a compact indexing axis or a small-format pick-and-place, and the body is sealed to IP65 on both the motor housing and the shaft bushing per IEC 60034-5, so it tolerates the splash and dust load typical of a machine-tool enclosure or a washdown-adjacent packaging line.
Torque, speed and current envelope
At 230 V single phase the motor delivers 0.5 N.m nominal torque at 4000 rpm; running it on 400 V or 480 V three phase drops the nominal point to 0.35 N.m but lifts the nominal speed to 8000 rpm or 9000 rpm respectively. The peak stall torque ceiling is 1.5 N.m at 115…480 V three phase, so the motor takes a 3× overload spike for short acceleration moves — useful for indexing duty where the dwell is short and the move-and-settle window is tight. Continuous power is 290 W, nominal output power 160 W at 230 V single phase and 290 W at 400 V or 480 V three phase, with the continuous stall torque 0.42 N.m at 0.73 A and peak Irms 2.9 A for a 3-second burst. Torque constant is 0.58 N.m/A at 120 °C copper hot with stator resistance 41.8 Ohm and inductance 37.13 mH — winding figures the drive's auto-tune routine reads directly to set the current loop gains. Mechanical speed ceiling is 9000 rpm and the back-EMF constant 40 V/krpm at 20 °C — at full speed on a 480 V bus the generated EMF sits well below the DC-link, leaving headroom for the drive to command full current through the upper speed range without field weakening.
Feedback and wiring
Feedback is an absolute single-turn Hiperface DSL encoder — the drive side must support the Hiperface DSL protocol on a single cable pair; pairing this motor with a Lexium 32 or Lexium 28S drive is the conventional match, and the encoder resolution comes from the DSL link rather than from a separate resolver or second cable. Power and feedback ride through a single rotatable right-angle quicklock connector, which lets the cable exit in any of four directions without re-terminating — handy in a tight cabinet where the cable duct dictates the exit angle. Cooling is natural convection, so no fan cable and no fan-failure fault to plan for; the motor flange itself is the heatsink, and the maximum axial force is 40 N with maximum radial force 340 N at 1000 rpm — beyond 1000 rpm the radial load derates further per the curve.
Lifecycle read
Lifecycle stage reads as 'current', so the part is still on the Schneider Electric catalogue. Independent distribution quotes this code against the BOM quantity; lead time and volume pricing come back with the RFQ, no factory-direct commitment implied. No official successor or cross-reference is listed on this entry, so any second-source path is a parametric match in the SH3 55 mm frame rather than a guaranteed drop-in.