What it is and what it does
The Siemens 5SJ6132-7RC is a 1-pole SENTRON miniature circuit breaker (MCB) rated 32 A with a C tripping characteristic, designed for retail-line applications. It protects branch circuits against overload and short-circuit faults, breaking up to 6 kA per EN 60898 at 240 V AC. The single-module width (18 mm) and 76 mm depth fit standard DIN-rail enclosures, and the C curve handles moderate inrush loads like small motors or lighting banks without nuisance tripping.
Key ratings and what they mean for fit
The 32 A rating at 30 °C and 240 V AC single-phase sets the continuous load limit — size your downstream wiring and load for this, not higher. The 6 kA breaking capacity per EN 60898 is the maximum fault current the breaker can safely interrupt; verify your available fault current at the panel doesn't exceed this, or you'll need an upstream current-limiting device. The C characteristic means the magnetic trip activates at 5 to 10 times rated current, so it's a good fit for circuits with moderate startup surges but not for high-inrush transformers or motor starters — those want a D curve.
Panel integration notes
Snaps onto standard 35 mm DIN rail (mounting position any,). At 18 mm wide (one modular unit,), it occupies a single slot — useful for dense panels where every millimeter counts. The 70 mm installation depth leaves clearance behind the DIN rail for wiring. IP20 with connected conductors means it's protected against finger contact but not washdown; keep it inside a closed panel. The sealable design allows locking the toggle position to prevent unauthorized switching.