The Siemens SENTRON 5SY4101-7CC11 is a 1-pole miniature circuit breaker rated 1 A at AC with a C tripping characteristic, meaning it is designed for moderate inrush loads such as small motor starters, contactor coils, or control transformers where the starting current is 5 to 10 times the rated current. The 1 A rating is valid at 35 °C ambient. Above that, the thermal element derates: 0.92 A at 40 °C, 0.88 A at 45 °C, 0.83 A at 50 °C, 0.78 A at 55 °C, and 0.73 A at 60 °C.
The 5SY4101-7CC11 occupies 1 modular width unit (18 mm) on a DIN rail, with a depth of 76 mm and an installation depth of 70 mm behind the panel face. The quick-assembly fastening system lets you snap it onto the rail and remove it with a screwdriver without disturbing adjacent breakers. Mounting position is any orientation, so vertical or horizontal rail layouts are fine. Touch protection is built in per the product feature listing. Combined terminals at both top and bottom accept the same wire range, so there is no dedicated line/load side — you can feed from either end.