Siemens 6SE6440-2UE17-5CA1 Soft Starter Module

Siemens MICROMASTER 440 drive, 6SE6440-2UE17-5CA1, is a compact 3‑phase motor controller from Siemens’ MICROMASTER family designed to provide adjustable speed control and soft-start/stop for small to mid‑size motors in industrial automation. This specific variant is the “without filter” version, intended for 3‑phase mains in the 500–600 V AC range with an input frequency capability of 47–63 Hz, aligning with common European and international power standards. The 6SE6440‑2UE17‑5CA1 designation identifies the model as part of Siemens MM440 hardware, a line known for straightforward integrated motor control in control cabinets and automation panels. By varying output frequency and voltage to the connected motor, it enables smooth acceleration profiles and precise speed regulation, helping minimize mechanical stress and electrical transients during startup and operation.