The SENTRON 5SQ2160-2YA32 is a 1-pole miniature circuit breaker with a B-curve tripping characteristic, rated 32 A at 30 °C and 240 V AC.
Degree of pollution 3 and overvoltage category 3 mean it's rated for the typical environment inside a distribution board — no special sealing or isolation needed. IP20 protection covers finger-safe terminals but not washdown; keep it inside an enclosure rated for the panel's ambient conditions.
Thermal derating is documented across the operating range: 32 A at 30 °C, 29.6 A at 40 °C, 28.64 A at 45 °C, 27.84 A at 50 °C, 26.72 A at 55 °C, and 25.6 A at 60 °C. The energy limitation class of 3 means it limits let-through energy well — useful for coordinating with downstream equipment.