What this MCCB carries — and what it means on the panel
The Siemens 3VA2010-5HM32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous at 40 °C through 70 °C — no derating needed across that span, which simplifies panel layout in warm enclosures. Three poles, line-protection design (no undervoltage release, no communication module, no voltage trip). Interrupting capacity hits 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3 kA at 690 V. That SCCR headroom means it can sit upstream of a high-fault transformer or motor branch without cascading to the main breaker.
Physical fit — panel and DIN rail
Dimensions: 181 mm high, 105 mm wide, 86 mm deep. Mounts on DIN rail or panel-mount via the standard SENTRON 3VA footprint. The 105 mm width for a 3-pole 100 A frame is typical for this class — check your existing busbar or lug spacing if replacing a different brand. Max power loss is 13.5 W, so ventilation in a sealed enclosure is worth a glance if you're packing multiple breakers side by side.
What it does — and doesn't do
Line protection only — no communication function, no undervoltage release, no voltage trigger, no trip indicator. Ground-fault monitoring is built in (summation current on the L-conductor). Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C. Insulation voltage rated at 800 V. If you need a shunt trip, auxiliary contacts, or a communication module, this variant isn't it — you'd step to a different 3VA suffix.