Electronic motor starter

An electronic motor starter comprising:

• a main switch configured as a power semiconductor, which forms a semiconductor contactor and has at least one semiconductor switch for switching a phase of a main power supply of a motor winding, a first connection of each of the at least one semiconductor switch being connected to a corresponding first main current contact of the motor starter;
• an auxiliary switch configured as a semiconductor switch and connected between at least one pair of auxiliary contacts of the motor starter;
• an electronic transducer configured to measure currents of phases of the main power supply, which is connected between a second connection of each of the at least one semiconductor switch of the main switch and a corresponding second main power contact of the motor starter;
• and
• an electronic controller for the main switch and the auxiliary switch, which is powered via control contacts of the motor starter, and to which measurement signals of the electronic transducer are fed, and which is configured to control the main switch and/or the auxiliary switch according to the main power supply via the control contacts and/or according to the measurement signals.