The Siemens 3VA1110-4ED22-0AA0 is a SENTRON molded case circuit breaker (MCCB) for line protection, rated 100 A continuous at 40 °C ambient and carrying a 121 kA interrupting capacity at 240 V AC — that means it can safely clear a fault up to 121 kA without welding contacts or rupturing, which is the figure that governs your SCCR coordination downstream.
Ratings that drive the panel design
The 100 A rating holds across 40 °C, 45 °C, and 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 (–). Dimensions: 70 mm deep, 50.8 mm wide, 130 mm high (–). Fits standard DIN-rail or panel-mount footprints for a 2-pole MCCB.