What the ratings mean for the panel
The Siemens SENTRON 3VA2010-6HN36-0KC0 is a 3-pole molded case circuit breaker rated for 100 A continuous current (Iu) with an ETU350 electronic trip unit. The interrupting ratings are what define its fault-clearing capability: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 4 kA at 690 V. At 415 V, that 187 kA SCCR means this breaker can safely interrupt a fault up to that level without upstream devices needing to coordinate — critical for high-fault-capacity industrial feeds where the transformer is close to the panel. The breaker carries a shunt trip (STL) auxiliary release and two HQ auxiliary switches, so it integrates into remote-trip or status-monitoring circuits without adding external relays. The ETU350 electronic trip provides adjustable long-time, short-time, instantaneous, and ground-fault protection curves — not a fixed thermal-magnetic characteristic, which matters when you need selectivity downstream.
Thermal derating and panel integration
The breaker holds its full 100 A rating up to 50 °C ambient. Above that, it derates linearly: 96.25 A at 55 °C, 92.5 A at 60 °C, 88.75 A at 65 °C, and 85 A at 70 °C. Operating range is -25 °C to 70 °C, with storage from -40 °C to 80 °C. The 105 mm width and 86 mm depth fit standard SENTRON panel cutouts; the 181 mm height clears most distribution enclosures without a sub-feed adapter. Maximum power loss is 13.5 W — a figure to check against enclosure thermal rise if you're packing multiple breakers in a sealed cabinet.