What this breaker is and what the ratings mean
The Siemens 3VM1110-3ED26-0AA2 is a 2-pole IEC frame 160 circuit breaker with a 100 A fixed thermal-magnetic trip unit (TM210). The 25 kA breaking capacity at 415 V (class N) means it can safely interrupt a fault current up to that level without welding contacts or cascading damage upstream — that is the figure your selective coordination study needs. The short-circuit protection is fixed at 10× In (1000 A magnetic pickup), so it is not adjustable; the overload Ir is also fixed at 100 A. This is a line-protection breaker, not a motor-protection device — the fixed thermal curve suits distribution feeders, not motor starts.
Where it fits in the panel
Mounts on a DIN rail in the standard IEC enclosure footprint. The terminal connection type suits panel wiring with ring or fork lugs. At 100 A fixed, verify the upstream feeder breaker and downstream load conductors are sized for the non-adjustable Ir — no dial to turn down if the load changes.