The Siemens 3VA1110-3ED22-0AA0 is a 2-pole SENTRON molded case circuit breaker rated for 100 A continuous at 40 °C, with no derating needed up to 50 °C — it still carries a full 100 A at 50 °C. Above that, the thermal curve steps down: 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. That means in a warm panel you lose less than 10 % of capacity even at the upper operating limit. The interrupting rating is 75.6 kA at 240 V AC and 52.5 kA at 415 V AC, which covers most industrial panelboard and distribution board fault levels. It's a line-protection device, not a motor-circuit protector, so it's sized for feeder or branch-circuit duty where you need a simple, reliable thermal-magnetic trip curve. The 2-pole format suits single-phase or two-phase loads, or a 2-pole branch on a 3-phase system.
The breaker measures 70 mm deep, 50.8 mm wide (2 inches), and 130 mm high. That 2-inch width per pole is the standard SENTRON 3VA footprint — it clips onto the mounting plate or DIN rail without needing extra adaptors for most panel layouts. The 50.8 mm width also matches the typical 2-module spacing on a DIN-rail terminal block row, so fill-factor planning is straightforward. That keeps the wiring simple: line in, load out, no control-power connections needed. The trip indicator is absent, so you'd rely on the handle position or a downstream status contact for remote indication.