Line protection MCCB with ETU850 — 100 A frame, 187 kA interrupting capacity
The interrupting capacity hits 187 kA at 240 V, 121 kA at 415/440 V, 79 kA at 500 V, and 4.25 kA at 690 V — that 187 kA figure at 240 V covers high-fault utility feeds or transformer secondaries where fault current is extreme.
The 100 A continuous rating is flat from 40 °C to 50 °C; above that it derates linearly to 85 A at 70 °C. If your panel ambient runs hot (say 55 °C+), you need to account for that 96.25 A / 92.5 A / 88.75 A / 85 A step-down — don't load it to 100 A in a warm enclosure. The 12.5 W max power loss is the heat the breaker dumps into the panel; factor that into your thermal budget, especially in a sealed cabinet.
The 2 auxiliary switches (HQ type) are integrated; the undervoltage release is fitted as standard. Communication function is present on this order code, so it can talk to a higher-level system for remote monitoring or trip-event capture. The basic switch assembly is order code 3VA2110-5KP32-0AA0, and the auxiliary trip module is 3VA9608-0BB11 — useful to know if you're ordering spare parts or sub-assemblies separately.