Altistart ATS 22. The ATS22 is an easy-to-use, three-phase digital soft start with a built-in bypass function for a wide range of applications. It features adjustable electronic overload and fieldbus communication. Key features include a compact size, easy connection, simple commissioning, integrated bypass function, three programmable logic inputs, one PTC input, two relay outputs, motor overtemperature protection, and overvoltage protection.