MCCB for main or feeder protection — 100 A, 187 kA SCCR
The Siemens SENTRON 3VA2110-5HN36-0AJ0 is a 3-pole molded case circuit breaker rated for 100 A continuous at 40 °C, with a maximum breaking capacity of 187 kA at 240 V AC. At 415 V and 440 V it still holds 121 kA, and at 690 V it drops to 4.25 kA, so the voltage-dependent curve governs where you place it in the distribution. Power loss maxes at 10 W — negligible for panel thermal budget but worth noting if you pack breakers tight.
Auxiliary contacts and release options
No undervoltage release, no shunt trip, no ground-fault module on this variant. The basic switch base is 3VA2110-5HN36-0AA0 if you ever need the bare breaker without auxiliaries.