Its interrupting capacity hits 220 kA at 240 V, 154 kA at 415 V, and 121 kA at 440 V — numbers that tell you this breaker is built for high-fault service entrance or main feeder duty where upstream coordination demands serious SCCR headroom. That 100 A holds flat from 40 °C up to 50 °C, then derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C.
It mounts into a panel via the SENTRON base adapter or direct screw fixing; no DIN-rail clip on this class. The 2 HP auxiliary switches (form C) are built in, so you get status feedback without an add-on module. If you need remote trip or monitoring, you'll add those as separate accessories. The N-conductor is protected at 100 % (full rating), which matters for 4-wire systems where the neutral carries load.