That 100 A holds flat from 40 °C up to 50 °C — no derating needed in a warm enclosure — then steps down to 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, and 90 A at 70 °C, so you can plan the thermal budget around the actual panel ambient rather than a worst-case number. Breaking capacity is the headline selector here: 75.6 kA at 240 V AC, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V. That 75.6 kA at 240 V covers high-fault service-entrance applications on 240 V delta or split-phase systems; the 52.5 kA at 415 V handles most European industrial distribution boards. The overcurrent release is a TM210 thermal-magnetic type — fixed thermal pickup, magnetic short-circuit trip. That keeps the part simple and reliable for standard line protection where you don't need remote status or adjustable curves.
This MCCB measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole SENTRON 3VA footprint. The auxiliary trip accessory is order code 3VA9688-0BL32, ordered separately if you need the integrated shunt-trip function.