The Siemens SENTRON 5SJ4163-7HG40 is a 1-pole miniature circuit breaker from the 5SJ4 series, rated 63 A at AC with a C tripping characteristic. It snaps onto a standard mounting rail, takes up one modular width unit (18 mm), and installs 70 mm deep — fits a standard distribution board without surprises.
Environmental and mounting flexibility
Operates from -40 °C to 75 °C, mounts in any position, and is rated for pollution degree 3 and overvoltage category III. Vibration resistance is 50 m/s² at 25 to 150 Hz and 60 m/s² at 35 Hz (4 s). Protection class IP20 with connected conductors, IP40 in the handle range. Halogen-free and silicon-free construction suits sensitive environments like chemical processing or clean rooms.