What the SH3 part number covers
SH30553P0AF4100 is a Schneider Electric SH3-series servo motor with integrated holding brake, sized to a 55 mm international-standard flange and 203 mm body length.
Torque, speed and power envelope
Continuous stall torque is 1.05 N·m across the 115 to 480 V three-phase window, with nominal torque of 1.1 N·m at 230 V single phase and 0.81 N·m at both 400 V and 480 V three phase — the higher single-phase figure reflects the voltage-current envelope the drive is asked to deliver, not a torque advantage at the shaft. Peak stall torque reaches 3.5 N·m on the same 115 to 480 V three-phase bus, with a peak Irms of 6.5 A over 3 s — the same value as the maximum continuous Irms, so the drive headroom is in duration rather than current. Nominal speed scales with the supply: 4000 rpm at 230 V single phase, 8000 rpm at 400 V three phase, and 9000 rpm at 480 V three phase, against a 9000 rpm maximum mechanical speed ceiling. Nominal output power is 390 W on 230 V single phase and 680 W on both 400 V and 480 V three phase — the 680 W continuous power figure is the rating the BOM should call out for sizing the drive.
Encoder, brake and electrical interface
Feedback is an absolute single-turn Hiperface DSL encoder, routed through a rotatable right-angled quicklock connector — a one-cable digital interface that carries both power and position data back to the Lexium drive and avoids a separate encoder cable run. Cooling is natural convection, with the stator reaching the 130 °C copper-hot temperature class at rated load — meaning the motor relies on its mounting flange to dump heat, and an insulated mounting surface or thermal pad strategy may be needed in a sealed cabinet.
Mechanical envelope and shaft loading
The shaft is a smooth 9 mm diameter by 20 mm long, centred on a 40 mm collar with 2 mm depth, and the flange takes four 5.5 mm mounting holes on the international-standard pattern. Maximum radial force is 710 N at 1000 rpm and maximum axial force is 80 N — the radial figure scales inversely with operating speed, so a belt-drive application at 8000 rpm will derate the allowable side load sharply and the coupling or pulley alignment becomes the design driver. Sealing is IP65 on both the motor body and the shaft bushing per IEC 60034-5 — adequate for washdown-adjacent panels and dusty factory environments, though the shaft seal is the wet-end barrier, not the housing paint.
Motor electrical constants for the drive sizing
Back-EMF constant is 41 V/krpm at 20 °C and torque constant is 0.62 N·m/A at 120 °C — the two figures together let the drive match its current-loop gain to the motor, and they confirm a roughly 60 V/krpm Ke at the hot copper temperature the drive will see in service. Stator resistance is 10.4 Ohm and stator inductance is 13.02 mH — the high-resistance figure is consistent with the 230/400/480 V multi-voltage capability and dictates the current-loop bandwidth the drive must close to control the shaft cleanly. Continuous stall current is 1.7 A — the value the drive must deliver continuously to hold the 1.05 N·m continuous stall torque against the 0.62 N·m/A torque constant, with a three-pole rotor construction.