The Siemens 5SN6216-7CP is a 2-pole miniature circuit breaker from the SENTRON 5SN series, rated for 400 V AC at 50 Hz.
The closest functional peer is the 5SY7206-7CC. The 5SY7206-7CC steps up to a 30 kA breaking capacity under IEC 60947-2 (double the 5SN's 15 kA) and adds UL 1077 / CSA C22.2 No. 235 listing at 5 kA. If your panel's prospective fault current sits above 15 kA, the 5SY7206-7CC is the safer drop-in — same footprint, no rewiring. If the 15 kA ceiling covers your fault study, the 5SN6216-7CP meets it where it is.
Solid conductors up to 35 mm² terminate directly — no need for pin ferrules on the line side for typical feeder runs.
Power loss per pole at rated current is 1.6 W; for a 2-pole unit that's 3.2 W total, negligible for thermal budget in a ventilated panel.
