The Siemens 5SN6104-7CP is a 1-pole miniature circuit breaker from the SENTRON 5SN family, rated for 400 V AC multi-phase operation and 72 V DC maximum.
The dual breaking capacity is the spec that matters for coordination. That 30 kA figure is the same class as the 5SL4106-7CC and 5SL4120-7CC siblings, which carry 10 kA per EN 60898 but the same 30 kA per IEC 60947-2; the difference is that those 5SL units are rated for 230 V single-phase, while this 5SN unit is rated for 400 V multi-phase and 440 V maximum.
Environmental range and wiring
Rated for -40 °C to 75 °C ambient, so it lives in unheated enclosures or roof-top cabinets without derating for cold starts. Accepts solid conductors up to 35 mm², which is generous for a 1-module breaker — enough for a 6 mm² feed into a sub-distribution board.