The Siemens SENTRON 3VA2110-7KQ32-0AA0 is a 3-pole molded case circuit breaker rated for 100 A continuous current, designed for line protection in distribution panels. Its interrupting capacity hits 330 kA at 240 V AC and 242 kA at 415 V AC — that's the fault-clearing muscle you need for high-available fault current installations like utility tie-ins or large motor control centers. At 690 V the rating drops to 3.7 kA, so this is a 400 V class breaker, not a 690 V main.
Sizing and thermal performance across the panel ambient range
The 100 A rating holds flat from 40 °C all the way to 70 °C ambient — no derating curve to calculate for standard panel environments. That's unusual for an MCCB; most need a reduction above 40 °C. The power loss is capped at 10 W maximum, so heat buildup inside a sealed enclosure is manageable. Operating range spans -25 °C to 70 °C, storage from -40 °C to 80 °C. Physical footprint: 86 mm deep, 105 mm wide, 181 mm tall. That's a standard SENTRON 3VA form factor — it fits the same panel cutout and busbar spacing as the 3VA1 and 3VA2 family breakers, so a panel laid out for a 3VA1110 will accept this unit without re-drilling the mounting plate.