What this MCCB carries and where it fits
The Siemens 3VA2110-7MN36-0JC0 is a SENTRON molded case circuit breaker (MCCB) built for motor protection duty — three poles, rated 100 A flat across the full 40 °C to 70 °C ambient range, so no derating curve to chase in a warm cabinet. Breaking capacity lands at 330 kA at 240 V, drops to 242 kA at 415 V and 440 V, then 187 kA at 500 V — at 690 V it still clears 3.7 kA, which covers most industrial motor branch circuits in North American and European panels. The 86 mm depth × 105 mm width × 181 mm height footprint fits the standard SENTRON panel cutout; the integrated shunt trip (STL) and two HQ auxiliary switches mean you can remote-trip and signal status without adding external modules.
Motor protection specifics
Designed as a motor-protection MCCB, it includes phase failure detection — if one phase drops, the breaker trips rather than letting the motor single-phase and cook the winding. The adjustable time-delay range (4 s to 17 s) lets you coordinate with downstream contactors and soft-starts so nuisance trips don't pull the whole line. Power loss is capped at 10 W maximum, which keeps the internal heat rise low enough that the 100 A rating holds even when the breaker is stacked in a multi-unit distribution block.