What this MCCB delivers for a panel line
The Siemens SENTRON 3VA2010-5HN32-0AB0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current at 40 °C through 70 °C — no derating needed across that span, which simplifies panel thermal budgeting. It is designed for line protection, meaning it guards the feeder or main bus against overloads and short circuits, not motor or branch protection. Breaking capacity reaches 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V — the high interrupt rating at 240 V suits it for low-voltage distribution with high available fault current, common in industrial switchboards. The rated insulation voltage is 800 V, covering most 480/277 V and 600 V systems with margin.
Panel fit and auxiliary wiring
Dimensions are 105 mm wide, 181 mm high, and 86 mm deep — a standard 3-pole MCCB footprint that mounts on a DIN rail or panel-mount base. The breaker ships with 2 auxiliary switches (HP type), configurable for status feedback or alarm signaling. No undervoltage release, no shunt trip, and no ground-fault monitoring are built in; those functions require add-on modules. Power loss at rated current is 13.5 W maximum — a moderate figure that should be factored into enclosure ventilation, especially in a dense panel with multiple breakers.