The Siemens 5SL6316-7MB is a SENTRON miniature circuit breaker (MCB) rated 16 A with a C tripping characteristic, 3 poles, and a 6 kA breaking capacity per EN 60898 at 400 V AC.
The closest functional peer within the SENTRON 5SL6 family is the 5SL4363-7 — same 3-pole, C-curve, 400 V AC rating, same dimensions (76 mm depth, 54 mm width, 90 mm height), same IP20 with connected conductors, and same mechanical service life of 10 000 operating cycles. The key difference: the 5SL4363-7 carries a 10 kA breaking capacity per both EN 60898 and IEC 60947-2, versus the 6 kA of the 5SL6316-7MB. If the panel's available fault current at the distribution board exceeds 6 kA, the 5SL4363-7 is the drop-in replacement — same footprint, same wiring, no rewiring needed.