What this MCCB carries
The Siemens SENTRON 3VA2010-6HN32-0AD0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, built around the ETU350 electronic trip unit. It carries a continuous current rating of 100 A at 40 °C, with the same rating holding through 50 °C — only starts to derate above that, hitting 85 A at 70 °C. That thermal headroom matters when the breaker sits in a warm panel next to other heat sources. Breaking capacity is the headline: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 4 kA at 690 V. Those numbers put it in the high-interrupting class — it clears a fault fast enough to keep upstream gear in place, which is the whole point of selective coordination in a distribution panel. Three auxiliary switches (HQ type) are built in, giving status feedback without a separate aux block. No undervoltage release, no ground-fault monitoring, no communication module — this is a straight feeder or main breaker, not a smart device. Front protection is IP40, so it's fine in a clean indoor panel but not washdown.
Footprint and panel fit
Dimensions are 105 mm wide, 181 mm high, 86 mm deep. That 105 mm width is a standard 4-module footprint on DIN rail or direct-mount plate — it'll drop into most SENTRON panel layouts without re-drilling. The 86 mm depth means it clears shallow backpan enclosures where a deeper frame would force a bigger cabinet.