Siemens SENTRON 3VA2110-6HL32-0HC0 — 100 A MCCB with shunt trip and auxiliary switches
It carries a 242 kA breaking capacity at 240 V, dropping to 187 kA at 415 V and 440 V, then to 121 kA at 500 V, and 3.7 kA at 690 V — the SCCR headroom at typical low-voltage levels means it can handle high-fault utility feeds without cascading upstream.
Power loss is 10 W maximum, so ventilation in a sealed enclosure is not critical at this rating.
Temperature derating and environment
The breaker carries no trip indicator, so fault-event diagnostics rely on the auxiliary switch feedback or a separate ammeter.
