Siemens 6SE6440-2UD31-8DB1 MICROMASTER 440 Inverter

The Siemens 6SE6440-2UD31-8DB1 is a MICROMASTER 440 inverter for industrial three-phase motor systems requiring an 18.5 kW constant torque drive rating. It also supports a listed 22 kW square-law torque rating for suitable load profiles, making application verification important during sourcing and replacement review.

This without-filter drive is designed for 380–480 V installations and may be requested for production machinery, conveyor sections, fan or pump systems, process auxiliaries and other existing MM440-based equipment. Its 520 mm enclosure height and industrial panel configuration should be checked against the original installation before replacement.

Send the full part number, motor data, quantity and destination country to request price and availability confirmation or a replacement assessment.

Q1: What motor power is associated with Siemens 6SE6440-2UD31-8DB1?
A: This MM440 inverter is rated at 18.5 kW for constant torque applications and 22 kW for suitable square-law torque applications.

Q2: Does this model have the same external dimensions as the 15 kW unit?
A: The listed dimensions for this model are 520 × 275 × 245 mm. Mounting and electrical requirements should still be confirmed for any replacement.

Q3: Is this drive intended for general product selection or existing system maintenance?
A: It is especially relevant for spare-part and replacement requirements involving existing MICROMASTER 440 systems.

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