32 A B-curve 2-pole MCB for panel protection
The Siemens 5SY7232-6 is a 32 A, B-curve, 2-pole miniature circuit breaker from the SENTRON 5SY7 series, rated for 400 V AC. Its 15 kA breaking capacity per EN 60898 and 25 kA per IEC 60947-2 give it headroom above standard domestic-grade breakers — it's sized for industrial panel protection where fault currents run higher. The B-curve (3–5× In magnetic trip) suits resistive and general-purpose loads; it's the right call for lighting, control transformers, and distribution subfeeds where you don't want nuisance trips from motor inrush.
Panel fit and wiring
Snaps onto DIN rail via the quick-assembly system, occupies 2 width units (36 mm), and accepts any mounting position. The combined top and bottom terminals take solid or stranded conductors from 0.75 mm² up to 35 mm² — oversized for a 32 A breaker, which makes panel wiring easier with larger feeds or daisy-chaining. Installation depth is 70 mm; overall depth 76 mm. IP20 with connected conductors means it's for enclosed panel use, not washdown areas.
Environmental and compliance
Rated for ambient temperatures from -40 °C to +70 °C, storage from -40 °C to +75 °C. Halogen-free and silicon-free construction. Overvoltage category III, energy limiting class 3. Touch protection is built in. Suitability is marked for mechanical engineering and industry applications.