The Siemens 5SL6350-7RC is a SENTRON miniature circuit breaker (MCB) rated 50 A, 3-pole, with a C tripping characteristic and a breaking capacity of 7.5 kA per EN 60898 at 415 V AC.
For panels with higher prospective fault current, you would need a higher-rated device or a current-limiting upstream breaker. Rated 50 A at both 30 °C and AC, so no derating needed at typical panel ambient. The 3-pole design switches all three phases simultaneously — no neutral pole. Supply frequency is 50 Hz only; verify compatibility if your installation runs 60 Hz.
Depth is 76 mm, width 54 mm (3 modular units), height 90 mm. Installation depth 70 mm. IP20 with connected conductors, so it is intended for enclosed panel use only, not washdown or outdoor exposure.