The Siemens 5SY7132-7CC is a 1-pole SENTRON miniature circuit breaker (MCB) with a C-curve trip characteristic, rated 32 A at 35 °C and 28.45 A at 40 °C.
Below that, the 5 kA rating per UL 1077 and CSA C22.2 No.235 covers North American supplementary protection applications — not full branch-circuit protection, but suitable for control transformers, relays, and PLC power supplies inside listed panels. The derating curve matters if your panel runs hot: at 45 °C the 32 A rating drops to 26.5 A, at 50 °C to 24.42 A, and at 55 °C to 22.11 A. If your enclosure ambient sits at 50 °C and you need a full 32 A load, this breaker won't hold — you'd need to step up to the next frame size or improve ventilation. Mounting position is any, so vertical or horizontal rail orientation works.
Where it is used
This MCB is designed for mechanical engineering and industrial applications per the manufacturer's suitability listing. In practice that means it goes into control panels feeding motor starters, contactor coils, solenoid valves, and small power supplies — loads where the C-curve's higher magnetic trip threshold avoids nuisance trips from inrush.