The Siemens 5SL6501-6CC is a SENTRON miniature circuit breaker (MCB) rated 1 A with a B tripping characteristic, 1P+N pole design, and a 6 kA interrupting capacity per EN 60898 at 230 V AC. It occupies two modular-width units (36 mm) on the DIN rail, which is standard for a 1P+N MCB that switches both phase and neutral.
The 6 kA rated short-circuit capacity per EN 60898 is the standard domestic-grade breaking capacity — it's sized for the typical fault levels in residential and commercial sub-distribution boards. The B characteristic means magnetic trip at 3 to 5 times In (3 to 5 A), so it's a good fit for cable protection and general-purpose loads that don't draw a heavy starting surge. The 1P+N design switches both the phase conductor and the neutral, which is required by some national wiring regulations for final circuits. The neutral pole is not overcurrent-protected — it's a switched neutral, not a protected pole. The MCB is sealable (padlockable in the OFF position) for lockout/tagout.