The Siemens SENTRON 5SU9354-7KK63 is a 1P+N RCD-operated circuit breaker (RCBO) combining overcurrent and residual-current protection in a single 2-module-wide (36 mm) package. Rated 63 A at 30 °C with a C-curve tripping characteristic, it breaks fault currents up to 10 kA per EN 60898 and IEC 60947-2.
At 40 °C it derates to 59.22 A, at 45 °C to 57.33 A, at 50 °C to 54.81 A, and at 55 °C to 51.03 A. For a panel running warm — typical near a transformer or drive cabinet — size the load against the derated figure, not the 30 °C headline.
Panel integration
Snaps onto DIN rail (EN 60715) in any mounting position. Two modular widths (36 mm) and 77 mm depth fit standard distribution boards.