RCBO for panel protection — 32 A, 30 mA residual, type C
The Siemens 5SU1324-7FP32 is a 2-pole RCBO (residual current circuit breaker with overcurrent protection) from the SENTRON series, combining a 32 A MCB with type C tripping characteristic and a 30 mA residual current device type A in a single 36 mm wide module. The 30 mA residual sensitivity (type A) handles pulsating DC fault currents from electronics loads — common in modern lighting, IT equipment, and small drives — so it's suited for general-purpose final circuits rather than pure sine-wave AC-only installations.
Full rated current of 32 A holds at 30 °C ambient; at 40 °C it derates to 30.8 A, at 50 °C to 29.5 A, and at 60 °C to 28.8 A (–). That matters when the RCBO sits in a crowded enclosure with multiple heat sources — the actual continuous load should stay under the derated figure for the enclosure's internal temperature. Mounting position is unrestricted, and the supply can enter from either top or bottom.
Rated insulation voltage (Ui) is 500 V. Energy limitation class 3 and touch protection fitted. The product designation per IEC 81346-2 and DIN EN 61346-2 is F. Operating frequency is 50 Hz. IP20 with connected conductors in an installed distribution board.