Siemens 3RA1220-1GB24-0BBA Starter Combination for Reversing

Siemens 3RA1220-1GB24-0BBA is a fuseless load feeder and reversing starter from the SIRIUS 3RA2 family, designed for reversing operation of 400 V AC motors and sized S0. It carries a load current rating of 4.5 to 6.3 A and uses a 24 V DC coil for control. The unit features screw-terminal connections and is designed for mounting on a standard DIN rail (or screw-fixed with the appropriate mounting accessories). It specifies coordination type 2 and a short-circuit current rating (I q) of 50 kA, making it suitable for compact control cabinets requiring reliable, interlocked forward/reverse motor control. This combination starter consolidates reverse/forward functionality in a single module, reducing wiring complexity and enabling straightforward integration in industrial automation layouts.