What the SH30401P16A2000 delivers on a motion axis
The SH30401P16A2000 is a 170 W SH3-series servo motor from Schneider Electric, built for continuous-duty positioning and speed control on a 40 mm international standard flange. Nominal torque lands at 0.176 Nm on single-phase 115/230 V supply and 0.184 Nm on three-phase 400/480 V — the higher voltage unlocks the full 166 W output power vs 77 W on single-phase. Speed range is 4000 rpm on single-phase input and 9000 rpm on three-phase, with a maximum mechanical speed of 9000 rpm regardless of supply — the three-phase connection is required to reach the top end. The absolute single-turn SinCos Hiperface encoder with 16-period resolution provides position feedback at power-up without a homing cycle, which simplifies commissioning on axes where the load position must be known immediately.
Torque, current, and thermal limits for sizing
Continuous stall torque is 0.21 Nm at 1.12 A across the three-phase voltage range — this is the continuous thermal limit, not the peak capability. Peak stall torque reaches 0.75 Nm at 480 V three-phase, driven by a 4.5 A peak current for 3 seconds — useful for acceleration transients or breaking static friction. The torque constant is 0.19 Nm/A at 120 °C copper temperature; the back EMF constant is 13.6 V/krpm at 20 °C — these two values let the drive calculate the motor model for field-oriented control without auto-tuning. Stator resistance is 17.2 Ω and inductance is 7.3 mH — the electrical time constant (L/R) is about 0.42 ms, which the drive current loop must handle without instability.
Mounting, sealing, and connection details
The motor mounts on a 40 mm flange with a 30 mm centring collar, 2.5 mm deep, and four 4.5 mm mounting holes — standard IEC fit for this frame size. Shaft is 8 mm diameter, 25 mm long, with a 3 mm parallel key — no holding brake fitted, so the load must be held externally or by the drive's holding torque at standstill. IP rating depends on the shaft seal: IP54 with the standard shaft bushing without seal ring, IP65 with the optional shaft bushing seal, and IP65 for the motor body itself — the connector is a rotatable right-angled type. Cooling is natural convection — no external fan, so the continuous torque rating assumes free air movement around the motor body.
Sourcing and lifecycle status
The sizing reference SH30402P points to the next frame up in the SH3 family if the 170 W continuous rating is marginal for the application.