MCCB for line protection — 20 A, 3-pole, TM240 release
Interrupting capacity is 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V — these figures cover most low-voltage distribution scenarios up to the 690 V tier. The 121 kA at 240 V is the headline number for high-fault panels; the 75.6 kA at 415 V is the one that matters for 400 V-class European distribution. Thermal derating is flat from 40 °C to 50 °C at 20 A, then drops to 19.2 A at 55 °C, 18.8 A at 60 °C, 18.4 A at 65 °C, and 18 A at 70 °C. In a sealed panel running at 55 °C ambient, you lose 0.8 A — plan your load margin accordingly.
The integrated auxiliary trip is order code 3VA9608-0BB25 — if you need a shunt trip or additional aux contact, that's the companion module.
The storage minimum matters for unheated warehouses in cold climates — the breaker can sit at -40 °C without damage, but must be warmed above -25 °C before energizing.