Siemens 1PH8101-1AF00-2BA2 SIMOTICS M-1PH8 Compact Asynchronous Motor 3.7kW 1500rpm IP55

The Siemens 1PH8101-1AF00-2BA2 is a SIMOTICS M-1PH8 compact asynchronous motor rated 3.7 kW at 1,500 rpm with 24 Nm and 12.5 A at 265 V. Output rises to 5.1 kW at 2,200 rpm across its four duty points as voltage climbs to 363 V, with current fixed at 12.5 A throughout. Forced ventilation and IP55 protection carry a Pt1000 winding temperature sensor.

Technical Specifications

Selection Notes

Torque tapers from 24 Nm at the 265 V base point to 22 Nm at the 343-363 V field-weakening points, while current holds fixed at 12.5 A across all four duty points, so drive current sizing is set once for the full speed range. The Pt1000 sensor lets the drive trip on actual winding temperature instead of a thermal model. IP55 sealing, forced ventilation, and fixed-bearing construction at vibration severity grade R/A suit continuous, enclosed machine-tool duty rather than intermittent or exposed installations. The half-key shaft balancing means coupling components must be selected to match that balancing convention.

Applications

Forced ventilation and IP55 sealing suit enclosed machine-tool bases rather than open, exposed mounts. Constant 12.5 A current across all duty points simplifies drive sizing for VFD-driven spindle or main-drive axes running mixed speeds between 1,500 and 2,200 rpm.