The Siemens 5SJ3132-6RC is a 1-pole miniature circuit breaker from the Retail line, rated 32A with a B tripping characteristic and a 4.5kA breaking capacity. The 4.5kA interrupting rating at 230/400V AC is the standard residential and light-commercial fault level; it clears a short-circuit up to that magnitude without welding contacts or cascading damage downstream.
Snap-on DIN rail mount, standard 1-module width (18 mm). Installs in any distribution board or sub-panel with a 35 mm DIN rail. The B-curve is the typical choice for lighting circuits, socket outlets, and control transformers in commercial or residential final sub-circuits.