Spec recap for the panel builder
The Siemens SENTRON 5SY4402-7CC11 is a 4-pole miniature circuit breaker with a C tripping curve and a 2 A rated current. Wire range is 0.75 to 35 mm² for both solid and stranded copper, so it'll take anything from a small control circuit tail up to a main feeder. Terminals are screw-type, torqued to 2.5 to 3.5 N·m. It's a 4-module wide unit (72 mm) with a depth of 76 mm and an installation depth of 70 mm — sits on a standard DIN rail via the quick assembly system.