The Siemens SENTRON 3VA2010-8KQ32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to the enclosure's thermal limit. At 415 V and 440 V it still holds 330 kA, dropping to 220 kA at 500 V and 52.5 kA at 690 V. That's a serious SCCR envelope for a 100 A frame.
At 415 V and 440 V the rating drops to 330 kA, and at 500 V to 220 kA. At 690 V it's still 52.5 kA. That means you can run this breaker at full 100 A in a warm enclosure without oversizing the frame.
No special cutout needed beyond the standard MCCB footprint.
What's inside — communication and ground-fault monitoring
This breaker includes a communication function — it can talk to a higher-level system for status and trip data, though the protocol isn't specified in the basic listing. It also has a ground-fault monitoring version configured for summation current formation on the L-conductor. That means it sums the phase currents and looks for imbalance to ground — useful for detecting leakage in ungrounded or high-resistance-grounded systems. No undervoltage release, no voltage trigger, no trip indicator on this variant. The initial value is set at 20 A, with a full-scale of 100 A. Power loss is 7.7 W maximum at rated load.