The Siemens SENTRON 3VA1110-4EF36-0BA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous at 40 °C, with a TM240 thermal-magnetic trip unit — meaning the thermal element handles overloads and the magnetic element handles short-circuits, no electronic adjustments. Breaking capacity hits 121 kA at 240 V and 75.6 kA at 415 V, so it handles high-fault industrial feeds without cascading upstream.
The 100 A rating holds steady up to 50 °C, then derates to 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, and 90 A at 70 °C — a shallow curve that buys headroom in a warm cabinet. Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep; the 76.2 mm width is a standard 3-pole MCCB footprint, so it drops into most panel-mount cutouts without re-drilling.