What this MCCB delivers
The Siemens SENTRON 3VA2010-5HN32-0AF0 is a 3-pole molded case circuit breaker rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Breaking capacity hits 187 kA at 240 V AC, 121 kA at 415/440 V, and still holds 75.6 kA at 500 V. That SCCR headroom means it clears high-fault bolted faults on the line side of a distribution panel without upstream coordination headaches.
Integration and footprint
Mounts on a standard DIN rail or panel-mount base. Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — fits a standard MCCB slot in most Siemens SENTRON distribution boards. The 3-pole block leaves room for side-mounting auxiliary switch and trip alarm (1 auxiliary + 1 HQ alarm switch built into the design).
What the ratings mean for your panel
Rated insulation voltage of 800 V gives you margin on 690 V systems — the 3 kA breaking capacity at 690 V is the tail of the curve, but the real working range is 240–500 V where the breaker does its job. The line protection design (no ground-fault monitoring, no undervoltage release, no communication function) keeps it simple: thermal-magnetic trip for overload and short-circuit on the feeder or main. Power loss at rated current is 13.5 W — negligible for panel thermal budgeting but worth noting if you cluster several breakers in a sealed enclosure.