The Siemens 3VA1110-4GF46-0AA0 is a 4-pole SENTRON molded case circuit breaker rated for 100 A continuous current (Iu) across the 40 °C to 50 °C band — no derating needed in that range. At 55 °C it still carries 98 A, at 60 °C 96 A, and at 65 °C 94 A, so the thermal curve is shallow enough that a warm panel enclosure won't force an upsized frame. The 121 kA breaking capacity at 240 V (76 kA at 415 V, 53 kA at 440 V, 11.9 kA at 500 V and 690 V) means this breaker can interrupt very high fault currents at lower voltages — typical for a main or feeder breaker in a 240 V or 400 V distribution board where the utility transformer is close. The TM240 overcurrent release is a thermal-magnetic design, so no external trip unit to configure; it's set at the factory for the 100 A rating.
The breaker measures 70 mm deep, 101.6 mm wide, and 130 mm high — a standard 4-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without surprises.