Siemens frequency inverters combine the highest technical quality with versatile functionality: from the basic MICROMASTER 420 to the high-performance MICROMASTER 440 with sensorless vector control and a power range up to 250 kW (300 HP). Each individual member of our MICROMASTER family is characterized by its exceptionally simple handling: from installation and commissioning to operator control. Later adaptation to new requirements is simplicity itself.
Each Siemens frequency inverter belonging to the family allows flexible circuit connection of inputs and outputs for optimum link-up of a broad variety of digital and analog signals. With its default factory settings, it is immediately ready for use.

MICROMASTER 440
0.12 to 250 kW / 0.16 to 350 HP, The all-rounder
MICROMASTER 430
7.5 to 250 kW / 10 to 350 HP , The specialist for pumps and fans
MICROMASTER 420
0.12 to 11 kW / 0.16 to 15 HP , The universal inverter