What the ratings mean for fit
The Siemens SENTRON 3VA2110-6HN32-0AF0 is a 3-pole molded case circuit breaker rated for 100 A continuous at 40 °C through 70 °C — no derating needed across that temperature band, which simplifies panel layout when the breaker sits near other heat sources. The interrupting capacity is 242 kA at 240 V, 187 kA at 415 V and 440 V, and 121 kA at 500 V; at 690 V it drops to 3.7 kA. That 242 kA figure at 240 V is the one that drives SCCR compliance in North American 240 V delta or 277/480 V wye panels where the available fault current is high — common in industrial distribution. The breaker is designed for line protection, meaning it guards the feeder or main branch against overload and short-circuit, not motor or generator protection.
Physical fit and panel integration
Dimensions are 181 mm high, 105 mm wide, 86 mm deep. The 86 mm depth is the front-to-back dimension — important when the breaker mounts in a shallow enclosure or behind a swing-panel door. The 105 mm width is the pole-to-pole span; three poles fit in a standard 105 mm wide cutout. The breaker includes a trip indicator and one auxiliary switch plus one trip alarm switch (HQ design), so it reports status back to a PLC or annunciator without an add-on module.