The Siemens 3VA1110-3EE32-0AA0-ZD00 is a 3-pole IEC frame 160 circuit breaker with breaking capacity class N, rated 100 A continuous and interrupting 25 kA at 415 V. That 25 kA rating means it can safely clear a bolted fault up to that level without blowing apart — critical for panel coordination downstream of a transformer or busway. The thermal-magnetic TM220 trip unit gives you adjustable overload protection from 70 A to 100 A (Ir) and a fixed short-circuit pickup of 10 x In (Ii = 1000 A).
Mounts on standard DIN rail or can be screw-fixed to a backplate. The 3VA1 frame is compact enough for a 600 mm wide panel but still leaves finger-room for wiring. The nut keeper kit keeps the DC Power connections from loosening under vibration — a detail that matters if this breaker rides on a genset or a mobile substation.