What it is and what it does
The Siemens 3VA2110-7MN32-0CA0 is a SENTRON molded case circuit breaker (MCCB) designed specifically for motor protection. It's a 3-pole unit rated for 100 A continuous current at 40 °C through 70 °C — no derating needed across that ambient span, which simplifies panel sizing in warm enclosures. The interrupting capacity tells you where it can be applied: 330 kA at 240 V, 242 kA at 415/440 V, 187 kA at 500 V, and 3.7 kA at 690 V. That 330 kA at 240 V is high — it handles high-fault utility feeds without needing a current-limiting upstream device in most panels. It includes phase failure detection and an undervoltage release as built-in features, so it's ready for motor branch circuits where loss of a phase or a voltage dip needs to trip the breaker. No communication function, no ground-fault monitoring — this is a straightforward thermal-magnetic MCCB for motor duty.
Where it fits
Mounts in a standard panel on a DIN rail or direct-mount base. Dimensions are 181 mm high, 105 mm wide, 86 mm deep — the 105 mm width is standard for a 3-pole MCCB in this class, so it drops into existing SENTRON or comparable panel layouts without re-drilling. Power loss is 12.5 W maximum — negligible for thermal budgeting in a ventilated enclosure, but worth noting in a sealed stainless cabinet where every watt counts. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C. That covers unheated warehouses and outdoor cabinets in most climates.